How to Get Rid of Fire Ants in Your Yard
Suddenly see a bunch of angry, red mounds in your lawn? You've got fire ants. They're not just visiting... they're moving in. Let's talk about how to serve them an eviction notice they can't ignore.
Why Fire Ants Invaded Your Yard
What Attracts Fire Ants?
The main troublemaker in the U.S. is the red imported fire ant, Solenopsis invicta . They're not from around here, they hitched a ride from South America back in the 1930s. 1 A big reason they've spread like wildfire is that their natural enemies from back home aren't here, letting their populations grow unchecked. 2 These ants are smart colonizers looking for the perfect place to build a nest.
They love sunny, open spots, which makes your lawn (and parks and golf courses) a perfect home. 1 They also need water, so they're common in humid states or in watered lawns in drier places. 1 A good food supply is another big draw.
Fire ants aren't picky eaters, they'll eat plants, tiny organisms, and other bugs like ticks. 1 We often help them out by spilling pet food, leaving sugary drink residue, or not securing compost piles. 4 The type of soil matters, too, they have an easier time building tunnels in loose or recently disturbed soil near construction, sidewalks, or driveways. 4
A single colony can have up to 500,000 ants. 2 Single-queen colonies are territorial, limiting them to about 150 mounds per acre. But multi-queen colonies play nice with their neighbors, leading to a crazy 300 mounds and 40 million ants per acre. 1 The queen is the engine of the colony, she can lay up to 2,000 eggs a day. 6
Rain and Ant Mounds
Ever notice mounds pop up after it rains? It's not your imagination. The rain doesn't create the ants, it just shows you where they've been hiding.
When it's hot and dry, fire ants move deeper underground to stay cool and moist. 8 Their mounds are hard to see then. 8 But when it rains, their tunnels flood, and the ants have to move up to survive.
Worker ants frantically build their mounds higher to create a dry spot for the queen and her babies. 9 That's why mounds seem to appear overnight after a storm. 6 This is actually a good thing for you, it's the perfect time to see exactly where all the nests are.
Walk your yard and mark every mound you see, think of it as making a battle map. This map will help you plan your attack once the ground is dry enough for treatment.
During a flood, fire ants do something amazing. They link their bodies together to form a living raft. 8 They put the queen and eggs in the middle and just float until they find dry land to start a new nest. 8
The Trouble with Fire Ants
Fire ant mounds are ugly, but the problems they cause are more than just cosmetic. They're a threat to your property, your family, and your pets. Understanding the damage they do shows why you need a plan to get rid of them.
Damage to Your Lawn and Garden
Fire ants don't eat your grass. 7 The mounds are the biggest problem, they make your lawn look lumpy and are a pain to walk on. 11 They can also mess up your lawnmower, as the hard-packed dirt can dull the blades. 11
In gardens, they're even worse. They eat young plants and seedlings, and their tunnels can mess with plant roots. Their aggressive nature makes basic gardening tasks like weeding and planting a painful ordeal.
Fire ants are also a big problem for commercial sod farms and nurseries. If ants are found in the soil, the plants can't be shipped to ant-free areas because of strict quarantine rules. 11
Dangers to People and Pets
The biggest problem with fire ants is that they're dangerous. They're called "fire" ants for a reason, the sting feels like your skin is on fire.
Do They Bite or Sting?
Fire ants actually do both, they bite AND sting. First, an ant bites you with its jaws to get a good grip. 7 Then it arches its body and stings you, injecting venom. Since it's holding on, it can pivot and sting you multiple times in a circle.
The venom causes an intense burning feeling. 13 Within a day or two, a small, white, fluid-filled blister (called a pustule) forms at each sting site. 7 That little white blister is the tell-tale sign of a fire ant sting, and it's important not to pop it, as that can lead to an infection and scars. 14
What makes them extra dangerous is how they swarm. Disturb a mound, and hundreds will pour out to attack in seconds. 14 This is a huge risk for kids playing in the yard or pets who might get too curious about a mound. 14
Another nasty thing about their venom, its effects can add up over time. The more you get stung in your life, the higher your risk of a bad allergic reaction next time. 13 This turns them from a simple pest into a serious health risk.
What to Do if You Get Stung
For normal stings, here's what to do 13 :
- Get Away! Move quickly away from the mound to avoid more stings.
- Brush 'em Off. Aggressively brush the ants off your skin and clothes. Don't use water, it can make them hang on tighter. 14
- Cool It Down. Use a cold pack on the area for 15-20 minutes to reduce swelling and pain.
- Wash It Up. Gently wash the stings with soap and water to prevent infection.
- Try Some Meds. An over-the-counter antihistamine can help with itching, and a hydrocortisone cream can ease discomfort.
- Don't Pop the Blisters! Seriously, leave the white pustules alone. Popping them can cause infection and scarring. 14
How to Find and ID Fire Ant Nests
Good fire ant control starts with finding the enemy. The goal is to destroy the whole colony, not just annoy the workers you see on top. First, you have to correctly identify them and find their home base.
Finding the Nests
The easiest thing to spot is the mound itself, made of loose, fluffy-looking dirt. 1 They are usually in sunny, open areas of a lawn, but can also be next to sidewalks, trees, or utility boxes. 1 Mounds can be just a few inches across or, in undisturbed fields, up to 18 inches high. 1
Here's the key trick to identifying them, there's no central hole on top. Most native ants have one, but imported fire ants don't. 1 They use a network of underground tunnels to get in and out, sometimes feet away from the mound. 2 The mound you see is just the tip of the iceberg, like a chimney for a huge underground city.
Not sure if a mound is active? Try the potato chip test. Leave a greasy chip or a bit of hot dog near the mound (not on it). If it's an active colony, ants will be all over it in 10 to 30 minutes. 11
If you poke a mound with a shovel, you'll see two things. Lots of little white things (that's the ant babies, eggs and larvae). 12 You'll also see tons of reddish-brown ants of different sizes swarming aggressively up the shovel. 12
The Real Goal: Destroying the Colony
The real goal isn't killing the workers on top or knocking down the mound. To destroy a colony for good, you have to kill the queen. 20
The queen is the colony's egg-laying machine. She's hidden deep underground, sometimes several feet down, where she is protected and fed by the workers. 6 If you only kill the workers on the surface, the queen will just lay more eggs, and the colony will rebuild, sometimes just a few feet away.
Ways to Get Rid of Fire Ants
You have a lot of options for fighting fire ants, from natural methods to powerful chemical baits. The trick is knowing how each one works, its pros and cons, and the trade-off between speed and effectiveness.
Natural and Organic Options
If you want to avoid harsh chemicals, there are a few natural options. They can be more work and sometimes less reliable, but they have their place, especially for a small number of mounds or in a vegetable garden.
Physical and Organic Methods
Boiling water is a popular chemical-free method. You carefully pour about 3 gallons of scalding hot water directly on the mound. 23 It can work on about 60% of mounds, but it has big downsides. 23 It's dangerous (you can get badly burned), it kills your grass and any other plants it touches, and it often doesn't reach the queen deep in the nest. 11, 24
Diatomaceous earth (DE) is another option. It's a powder made from fossils that kills insects by cutting their waxy exoskeleton, causing them to dry out and die. 22, 23 But it only kills ants that touch the dry powder. It won't be carried back to the nest, so it can't kill the queen and wipe out the colony. 22
The best organic option is a bait with spinosad. Spinosad comes from a natural soil bacterium and is approved for organic farming. 15 You can find it in products like "Come and Get It!". 15 Worker ants carry the bait back to the nest, where it kills the queen and the entire colony. 23
DIY Home Remedies
The internet is full of DIY recipes for killing fire ants. Some are useless, some are dangerous, and a few actually work. It's important to know the difference.
A Homemade Fire Ant Killer That Works
The most effective homemade killer is a bait made from Borax and sugar. Borax is a natural mineral that's a slow-acting stomach poison for ants. 28 The sugar attracts them, and because the poison is slow, worker ants have time to carry it back to the colony and share it with the queen. 28
Here's a simple recipe 30 :
- Ingredients: 1 tablespoon of Borax, 1 cup of sugar, and 1/2 cup of water.
- Instructions:
- Mix the sugar and Borax in a jar.
- Add warm water and stir until everything is completely dissolved into a syrup.
- Soak cotton balls in the syrup and place them on pieces of cardboard or in small lids near ant trails or mounds.
- Why it works: The sweet sugar bait fools the ants into carrying the slow-acting Borax poison back home, killing the whole colony.
- Safety Warning: Borax is toxic to pets and kids if they eat it. Place your bait stations where they absolutely cannot reach them. 28 You can put them inside a plastic container with small holes poked in it, big enough for ants but not for paws or fingers.
Other home remedies don't work as well. A mix of dish soap and water acts as a contact killer, but you need a huge amount to reach the queen. 22, 23 Vinegar is mostly a repellent, it might make the ants move a few feet, but it won't kill them (it will kill your grass, though). 22, 28 Baking soda alone does nothing, and a bait made with it is much less effective than one with Borax. 22, 28
| Remedy | The Popular Theory | The Scientific Reality | Verdict |
|---|---|---|---|
| Grits / Cornmeal | Ants eat the grits, which expand in their stomachs and make them explode. | Adult fire ants can't eat solid food, they turn it into liquid first. This myth is biologically impossible. 22 | Fiction |
| Club Soda | The CO2 in the soda suffocates the colony in their tunnels. | Research shows club soda does nothing. There's not enough of it to affect the deep tunnel network. 22 | Fiction |
| Gasoline / Diesel | Pouring it on the mound will kill the whole colony. | This is illegal, very dangerous, and contaminates soil and water. It rarely kills the queen. 11 | Dangerous Fiction |
| Vinegar | The acid in vinegar kills ants and destroys the nest. | Vinegar is a repellent that messes up their scent trails, but it's a poor killer. It will also kill your plants. 22 | Ineffective Killer |
| Dish Soap | The soap solution breaks down the ants' exoskeleton and kills them. | It works on contact but needs a large volume to work as a drench and has no lasting effect. 22 | Fact (with limitations) |
| Coffee Grounds | The acid and caffeine in coffee grounds are toxic to ants. | Studies show coffee grounds have no effect on fire ants at all. 22 | Fiction |
| Cinnamon | The strong smell repels ants or suffocates them. | Research found that mounds treated with cinnamon actually had more ant activity. It does not kill colonies. 22 | Fiction |
| Borax + Sugar Bait | Ants take the sweet poison back to the nest, killing the queen and colony. | This is scientifically sound. It uses the ants' own feeding behavior against them to wipe out the colony. 28 | Fact |
Fast-Acting Killers
Sometimes you just need a mound gone NOW, like before a backyard party. For that, you want a fast-acting contact insecticide.
These products kill fire ants within minutes or hours. 33 They are almost always used to treat individual mounds. Common active ingredients are acephate (a dust) or pyrethroids like bifenthrin, which come as dusts, granules, or liquids. 15, 35
The big plus is speed. The big minus? Because they kill so fast, they often don't get deep enough to kill the queen. 37 This means the colony might recover or just move a few feet away. Think of them as a quick fix for problem spots, not a long-term solution for your whole yard.
Chemical Pesticides and Baits
For the surest way to get rid of fire ants, chemical baits are your best bet. Baits are the most effective killers because they trick ants into taking poison back to the nest, which kills the queen and the whole colony from the inside out. 20 This table helps you understand what's in the products on the shelf.
| Active Ingredient | Common Brand Names | How It Works | Time to Colony Death |
|---|---|---|---|
| Hydramethylnon | Amdro, MaxForce | Slow-acting stomach poison that stops ants from producing energy. | 2–4 weeks 27 |
| Indoxacarb | Advion | Very fast-acting stomach poison that is activated by the ant's own enzymes. | 3–10 days 27 |
| Fipronil | MaxForce FC (bait), TopChoice (pro granule) | Slow-acting nerve agent that disrupts the ant's nervous system. | Several days (bait); 4–6 weeks (pro granule) 17 |
| Spinosad | Come and Get It! | Natural substance from a soil bacterium that affects the nervous system. | Several weeks 15 |
| S-Methoprene | Extinguish | Insect Growth Regulator (IGR), basically birth control that sterilizes the queen. | 2–6 months 27 |
| Pyriproxyfen | Distance | Insect Growth Regulator (IGR), a hormone mimic that sterilizes the queen and stops babies from growing. | 3–6 months 27 |
| Bifenthrin | Talstar, Ortho Max | Fast-acting nerve agent that paralyzes and kills ants on contact. | Minutes to hours (for mound) 27 |
| Acephate | Orthene | Fast-acting nerve agent that disrupts nerve signals, causing rapid death. | Hours to 1 day 15 |
| Hydramethylnon + S-Methoprene | Extinguish Plus, Amdro Fire Strike | Combination (Poison + IGR), gives a fast kill plus long-term prevention. | Starts working in weeks, full control in months 15 |
These chemicals work in a few different ways:
- Poisons (Toxicants): These are the faster baits, like hydramethylnon and indoxacarb. They kill ants in a few days to a few weeks. Advion (indoxacarb) is one of the fastest, with results in as little as 24-72 hours. 27
- Birth Control (IGRs): These are slow but sure. Ingredients like S-methoprene don't kill adult ants directly. Instead, they sterilize the queen and stop baby ants from growing up, so the colony slowly dies off as old ants die and aren't replaced. 27
- Combination Baits: These are the best of both worlds. Products like Extinguish Plus mix a fast-acting poison with slow-acting "birth control" for a quick knockdown and a long-term wipeout. 15
How to Apply Treatments
Choosing the right product is half the battle, applying it correctly is the other half. Most treatment failures are from user error. You have to follow the rules for each method.
Baits
For baits to work, you must apply them when the ground is dry, with no rain expected for a day or two. 6 Water ruins the bait. Also apply them when ants are actively looking for food, usually when ground temperatures are between 70°F and 90°F. 17
- Individual Mound Baiting: Good for just a few mounds. Sprinkle the bait in a 2- to 4-foot circle around the mound, not directly on top of it. 6 If you dump it on the mound, they'll think it's trash and move it away.
- Broadcast Baiting: The best way to treat your whole yard. Use a spreader to apply a small amount of bait evenly over the entire lawn. 40 The big advantage is that it gets all the colonies, even the little ones you can't see. 40
Mound Treatments
These are contact killers applied directly to a mound for a quick takedown.
- Liquid Drenches: Mix a liquid insecticide with water and pour it over the mound. The key is volume, you need 1 to 2 gallons to soak the mound deep enough to get the queen. 11 Don't poke the mound first. 11
- Granules and Dusts: Sprinkle these over the mound as the label directs. Many granular products need to be watered in with 1 to 2 gallons of water. 11 Dusts usually don't need water. 36
The Two-Step Method
Experts love this approach, and for good reason. It's called the Two-Step Method, and it combines the best of both worlds for the most complete and lasting control. 17
- Step 1: Broadcast a Bait. In the spring and/or fall, spread a fire ant bait over your entire yard. This is your foundation, killing 80-90% of the ants, including hidden colonies.
- Step 2: Treat Problem Mounds. A week or two later, walk the yard. If you see any mounds left in high-traffic areas (like near your patio or a playset), zap them with a fast-acting mound treatment.
What's the Best Overall Treatment?
There's no single "best" product, but there is a "best" strategy: The Two-Step Method. 17 It's the most effective, economical, and smartest approach for most lawns.
It works because it's both proactive and reactive. The broadcast bait (Step 1) is proactive, killing colonies before they become big problems. 40 The individual mound treatment (Step 2) is reactive, giving you immediate control where you need it most.
If you're willing to hire a professional, an annual application of a long-lasting granular insecticide with fipronil (like TopChoice) is a great choice. This is a restricted product only pros can use. One application can keep fire ants away for up to a whole year. 17
| Method | Effectiveness | Speed | How Long It Lasts | Cost | Effort | Pet/Child Safety |
|---|---|---|---|---|---|---|
| Natural (Boiling Water) | ~60% (hit or miss) | Immediate | None | Low | High | High risk (burns) |
| DIY (Borax Bait) | High (if made right) | Slow (weeks) | Medium | Very Low | Medium | Low (if bait is secured) |
| Mound Treatment (Contact Killer) | Low-Medium | Very Fast (hours) | Low (they'll be back) | Low per mound | Medium | High (keep away until dry) |
| Broadcast Bait (Poison) | High (80-95%) | Medium (weeks) | Medium (3-6 months) | Medium | Low | Low (very little poison) |
| Broadcast Bait (IGR) | Very High (>90%) | Very Slow (months) | High (6-12 months) | Medium | Low | Very Low (very little poison) |
Biological Control: The Long Game
While we fight fire ants in our yards, scientists are playing the long game. They're using biological control agents, natural enemies of the fire ant, to control them on a huge scale. You can't buy these, but they are helping to restore a natural balance.
The most famous is the phorid fly, also called the "ant-decapitating fly". 3 It's a tiny fly from South America that researchers have released in the U.S. 11 The female fly injects an egg into a worker ant. The larva hatches, eats its way into the ant's head... and then the ant's head falls off. 25 The fly then grows up inside the detached head.
It's dramatic, but these flies don't wipe out colonies. 47 Their real impact is that they stress the fire ants out. Their presence makes the ants hide more, which gives native ant species a fighting chance. 11 Scientists are also using natural diseases that infect fire ants to weaken colonies and reduce the queen's egg-laying. 11
Treatments You Should Never Use
Knowing what to do is important. Knowing what not to do is just as important. Some popular "remedies" are ineffective, dangerous, and bad for the environment.
The worst offender is gasoline or other fuels. 32 Pouring gas on a mound is illegal, a huge fire hazard, and an environmental disaster. It contaminates the soil and can get into groundwater. 11 It won't even kill the whole colony.
Another bad idea is shoveling one mound onto another, thinking they'll fight to the death. 32 Many fire ant colonies have multiple queens and aren't territorial. All you will do is make thousands of ants very, very angry at you and get swarmed. 24
And just to repeat, things like grits, club soda, coffee grounds, and aspartame have all been tested and proven to be useless against fire ants. 22 Don't waste your time.
Calling a Professional
You can handle most fire ant problems yourself, but sometimes you need to call in the pros. They have the expertise, equipment, and access to stronger products that you can't buy.
When to Make the Call
It might be time to call a pro if your yard is completely overrun with mounds (like more than 20 in a typical yard). Also, if you've tried the Two-Step Method correctly and the ants are still winning, a pro can figure out what's wrong.
Another key reason is safety. If someone in your family has a severe allergy to insect stings, you can't take any chances. The same goes for places like schools, daycares, or parks where the risk to the public is high.
The biggest advantage pros have is access to restricted-use pesticides like fipronil (TopChoice). A single application by a licensed pro can control fire ants for up to an entire year, something that's tough to achieve with DIY products. 17
How the Pros Do It
Professionals use the same basic strategies, just with more precision and better tools. Their plan usually includes 5 :
- Inspection: They'll check out the whole property to see how bad the infestation is and find all the nests.
- Pro-Grade Baits: They use fresh, high-quality baits and apply them with calibrated spreaders for the best results.
- Targeted Treatments: For quick relief, they'll use powerful drenches or dusts to knock out problem mounds fast. 35
- Barrier Treatments: They can apply a long-lasting insecticide around your home that creates a deadly barrier. This kills any ants that try to move in for months. 17
Long-Term Fire Ant Control
Killing one mound is great, but winning the war means thinking long-term. The goal is to make your yard a place where new fire ant colonies can't even get started.
Keeping Fire Ants Away for Good
Can you get rid of them "forever"? Well, yes and no. New queens have wings and can fly in from your neighbor's yard or a nearby park to start a new colony. 7 So "forever" really means having a continuous management plan that keeps your yard ant-free. 42
The best way to do this is to make the Two-Step Method a seasonal routine. 17 Broadcasting bait in the spring and again in the fall acts like a shield. It kills new, tiny colonies before they become big, angry mounds. Using a bait with an Insect Growth Regulator (IGR) adds another layer of long-term control. 39
Preventing Fire Ants from Spreading
To stop fire ants from coming back, you need a two-part plan. Make your yard less attractive to them and create a chemical barrier they can't cross.
Preventive Yard Care
These are things you can do to make your yard a terrible place for fire ants to live 4 :
- Keep Your Lawn Healthy: A thick, healthy lawn is harder for ants to build mounds in. 4 Proper mowing and watering helps.
- Remove Food Sources: Don't leave pet food out. Clean up spills on the patio right away and keep trash cans sealed. 4
- Manage Water: Fix leaky faucets and make sure your yard has good drainage. Ants need moisture, so don't give them damp spots to live. 4
These steps help, but the most important part of prevention is chemical treatment. A seasonal broadcast of fire ant bait is the single best thing you can do to keep them away. 4
Using Repellents
You can also use repellents to keep ants away from specific spots like patios, doorways, or playsets.
What Scents Do Fire Ants Hate?
Ants "talk" to each other using chemical smells called pheromones. Strong, pungent smells mess up their communication, basically blinding and confusing them. 50
Several natural things have this repellent effect:
- Vinegar: The strong smell of white vinegar repels ants. 50 A 50/50 mix of vinegar and water can be sprayed as a barrier.
- Citrus Peels: Ants hate the oil in lemon and orange peels. 26 Spreading peels around can create a temporary barrier.
- Essential Oils: Peppermint, tea tree, lavender, and lemon eucalyptus oil all work. 29 A few drops in a spray bottle with water can be applied to surfaces.
- Spices: A line of cayenne pepper, black pepper, or cinnamon can create a barrier that ants don't want to cross. 29
Remember, these are repellents, not killers. They won't solve an infestation. They're best used as a short-term tool to keep ants out of a small, specific area. Planting herbs like mint, lavender, or sage may also help discourage ants nearby. 52
After You've Treated
Putting down treatment isn't the final step. Knowing what to expect in the hours and days after is key to judging if it worked and helps you avoid thinking it failed when it's actually working.
Will the Ants Really Be Gone?
Yes, you can completely get rid of fire ants in your yard, but your yard will always be at risk of a new invasion. New queens fly in from untreated areas, so fire ant control needs to be an ongoing process, not a one-time event. 7, 42
Don't be alarmed if you see *more* ant activity right after you treat. This is often a good sign that the treatment is working. 53
- If You Used a Bait: You'll see tons of ants grabbing the bait. This is good! It means they're taking the poison home to the queen. Don't disturb them. 20
- If You Used a Contact Killer: The chemical makes the survivors panic and scatter. They'll be more visible for a little while as they run around chaotically. 53
How long it takes for a colony to die depends completely on the product you used. Have realistic expectations:
- Fast-Acting Contact Killers: These give the quickest results on a single mound, often within 15 minutes to a few hours. 33
- Fast-Acting Baits: These take longer but get the whole colony. Expect to see them gone in 3 days to 4 weeks. 27
- Slow-Acting IGR Baits: These are the slowest but most thorough. It can take 2 to 6 months for the colony to die off completely. 18 You have to be patient with these.
Safety First
Using any pesticide, natural or chemical, means being responsible. You need to protect people, pets, and the environment. While modern products are designed to be safe when used correctly, you have to follow the rules.
Is It Safe for Pets and Kids?
The good news is that fire ant baits use a very tiny amount of active ingredient, so the risk from accidental exposure is low. 21 A 50-pound dog would have to eat an enormous amount, around 9 pounds of bait, for it to be a serious problem. 54
The main risk is if a pet or kid eats the product, not from just walking on the treated lawn. 55 If they do eat some, they'll most likely get an upset stomach. 21 Still, you should follow strict safety rules to minimize any risk.
How to Apply Safely
Rule number one, always: read the label. No, seriously, read the entire label before you do anything. It's a legal document with instructions for safe use. 42
- Keep Pets and Kids Away: Before you start, bring pets inside and make sure kids are out of the area. Keep them off the treated lawn for the time listed on the label, or at least until a liquid spray is completely dry. 55
- Apply It Right: Don't leave piles of bait on the lawn. Use a spreader to get a thin, even coating. 55
- Watch the Area: After you're done, keep an eye on pets to make sure they don't lick or dig at treated mounds. 55
- Store It Securely: Always store pesticides in their original container, locked up or high on a shelf where kids and pets can't possibly get to them. 20
If you think a pet or child has eaten some pesticide, call a veterinarian or the Poison Control Center right away.
Fire Ant FAQs
Even with a good plan, you might still have questions. Here are answers to some common ones to help make sure your ant-killing program is a success.
Common Questions
How Often Should I Treat My Yard?
For a long-term plan using broadcast baits, the standard advice is to treat twice a year: once in the spring and again in the fall. 17 This schedule kills colonies before they get big in the summer and reduces the number that survive the winter. Some people use holidays like Easter and Labor Day as easy reminders. 44 Always check the product label, some allow more frequent use for heavy infestations, but never use more than the label allows per year. 38
What if My Treatment Didn't Work?
If your treatment didn't work, don't blame the product just yet. The cause is almost always user error related to timing, conditions, or how it was applied. Before you try again, ask yourself these questions:
- Was the Timing Wrong? Did you apply bait to a wet lawn, right before rain, or in the middle of a hot day when ants weren't foraging? Baits must be applied to dry ground when ants are active. 6
- Was the Bait Stale? Was it from a bag that's been open for months? The oil in baits can go bad, and ants won't eat it. 40 Always use fresh bait.
- Were Your Expectations Unrealistic? Did you use a slow-acting IGR bait and expect results in a week? You have to match your expectations to how the product works. 27
- Did the Queen Survive? If a mound drench failed, you might not have used enough liquid to get deep enough into the nest to kill the queen. 37
- Did You Use the Wrong Tool for the Job? Did you use a fast-acting contact killer on a few mounds and expect your whole yard to be clear? Spot treatments won't provide yard-wide control. 33
If a treatment fails, run through this checklist. Usually, a second try under the right conditions with fresh bait will work. If you've done everything right and are still losing, it may be time to call a professional.
Works cited
- Understanding a Fire Ant Colony - Amdro, https://www.amdro.com/learn/fire-ants/understanding-a-fire-ant-colony
- How to Kill and Prevent Fire Ants in Your Lawn - GardenTech, https://www.gardentech.com/blog/pest-id-and-prevention/simple-effective-fire-ant-control
- Fire Ant Predators: Enemies and Killers - Orkin, https://www.orkin.com/pests/ants/fire-ants/fire-ant-predators-enemies-and-killers
- How to Prevent Fire Ants in Your Yard in Texas | Emerald Lawns, https://emeraldlawns.com/blog/how-to-prevent-fire-ants-in-your-yard
- What Attracts Fire Ants to Your House? - Mosquito Squad, https://www.mosquitosquad.com/las-cruces/blog/what-attracts-fire-ants-to-your-house/
- Rain = Fire Ants! - Bexar County Entomology, http://bexarento.blogspot.com/2018/09/rain-fire-ants.html
- Fire Ant Management - Weed Man Charleston, SC, https://charleston.weedman.com/programs-and-services/lawn-care/fire-ant-management
- Behaviour of fire ants | National Fire Ant Eradication Program, https://www.fireants.org.au/look/biology/behaviour
- Why do fire ant mounds pop up after a rain? – Ant Pests, https://ant-pests.extension.org/why-do-fire-ant-mounds-pop-up-after-a-rain/
- Effects of simulated and natural rainfall on summer mound construction by imported fire ants (Hymenoptera: Formicidae) - Publication : USDA ARS, https://www.ars.usda.gov/research/publications/publication/?seqNo115=205045
- Fire Ants in Commercial Turfgrass, Home Lawns and Landscapes, https://content.ces.ncsu.edu/fire-ants-in-turf
- How can I tell if I have fire ants? - Texas Imported Fire Ant Research ..., https://fireant.tamu.edu/manage/how-can-i-tell-if-i-have-fire-ants/
- Fire ant stings | National Fire Ant Eradication Program, https://www.fireants.org.au/dangers/stings
- Health impacts of fire ants | National Fire Ant Eradication Program, https://www.fireants.org.au/dangers/impacts/health
- Fire Ant Control - Texas A&M AgriLife Research & Extension Center at Lubbock, http://lubbock.tamu.edu/files/2015/10/ENTO-034.pdf
- fireant.tamu.edu, https://fireant.tamu.edu/manage/how-can-i-tell-if-i-have-fire-ants/#:~:text=You%20can%20tell%20you%20have,the%20colony%20through%20underground%20tunnels.
- Red Imported Fire Ants - Harris, https://harris.agrilife.org/fireant/
- Fall and Spring are Good Times to Apply Bait for Fire Ant Management - LSU AgCenter, https://www.lsuagcenter.com/profiles/mhferguson/articles/page1600712546786
- Fire Ants | NC State Extension - TurfFiles, https://www.turffiles.ncsu.edu/insects/fire-ants-in-turf/
- Why Ant Bait is Better and How to Bait Fire Ants - Amdro, https://www.amdro.com/learn/fire-ants/why-ant-bait-is-better-and-how-to-bait-fire-ants
- Is Ant Bait Safe Around Children? | Poison Control, https://www.poison.org/articles/is-ant-bait-safe-around-children-193
- Why Fire Ant Home Remedies Don't Work — and What Does, https://www.fireants.com/how-to/why-fire-ant-home-remedies-dont-work-and-what-does
- Natural, Organic, and Alternative Methods for Imported Fire Ant Management - Texas A&M AgriLife Research & Extension Center at Lubbock, https://lubbock.tamu.edu/files/2015/10/ENTO_009.pdf
- Sustainable Fire Ant Control - Solutions for Your Life - UF/IFAS Extension, https://sfyl.ifas.ufl.edu/lawn-and-garden/sustainable-fire-ant-control/
- What Eats Fire Ants In Florida | Fire Ant Natural Predators - Hoffer Pest Solutions, https://www.hofferpest.com/blog/2025/march/what-eats-fire-ants-in-florida-fire-ant-natural-/
- www.fireants.com, https://www.fireants.com/how-to/why-fire-ant-home-remedies-dont-work-and-what-does#:~:text=7.-,Orange%20Peels,help%20control%20more%20common%20pests.
- Broadcast Baits for Fire Ant Control – Ant Pests, https://ant-pests.extension.org/broadcast-baits-for-fire-ant-control/
- Homemade Fire Ant Killer: Do 11 Popular Home Remedies Kill Ants ..., https://bootsonenterprises.com/boots-on-blog/homemade-fire-ant-killer
- 20 Safe Ways to Kill Ants in Your Home and When to Hire a Pro - Healthline, https://www.healthline.com/health/how-to-kill-ants
- The Very Best Homemade Ant Killer - The Creek Line House, https://www.creeklinehouse.com/the-very-best-homemade-ant-killer/
- Make Your Own Fire Ant Killer at Home - Randy Lemmon, https://randylemmon.com/make-your-own-fire-ant-killer-at-home/
- Why Home Remedies for Fire Ants Don't Work - Amdro, https://www.amdro.com/learn/fire-ants/why-home-remedies-for-fire-ants-dont-work-and-what-does
- The Most Effective Fire Ant Controls For Your Lawn - GardenTech, https://www.gardentech.com/blog/pest-id-and-prevention/fire-ant-controls-choices-that-keep-you-covered
- Control Methods - Texas Imported Fire Ant Research and Management Project, https://fireant.tamu.edu/controlmethods/
- extension.msstate.edu, https://extension.msstate.edu/publications/control-fire-ants-your-yard#:~:text=Individual%20mound%20treatments%20containing%20contact,drenches%20and%20dry%20mound%20treatments.
- The Texas Two-Step Method - Do-It-Yourself Fireant Control for Homes and Neighborhoods - Navarro County Extension Office, https://navarro.agrilife.org/files/2011/07/twostepfireantcontrol_3.pdf
- Why don't most ant baits work on fire ants? Why doesn't Niban work? : r/pestcontrol - Reddit, https://www.reddit.com/r/pestcontrol/comments/111qha7/why_dont_most_ant_baits_work_on_fire_ants_why/
- Fire ant bait product guide, https://www.fireants.org.au/treat/residents/using-bait/fire-ant-bait-product-guide
- The Value in a Long-Term Fire Ant Control Program, https://www.centralantcontrol.com/blog/value-fire-ant-control-program/
- Broadcast Baits for Fire Ant Control - - Agricultural and ..., https://www-aes.tamu.edu/files/2014/06/Broadcast-Baits-for-Fire-Ant-Control.pdf
- Fire Ant Baits - ePestSupply, https://www.epestcontrol.com/129-fire-ant-baits
- Control Fire Ants in Pastures, Hayfields, and Barnyards | Mississippi State University Extension Service, https://extension.msstate.edu/publications/control-fire-ants-pastures-hayfields-and-barnyards
- The Value in a Long-Term Fire Ant Control Program, https://www.centralantcontrol.com/blog/value-fire-ant-control-program
- Control Fire Ants in Your Yard | Mississippi State University Extension Service, https://extension.msstate.edu/publications/control-fire-ants-your-yard
- Broadcast Baits for Fire Ant Control | Live Oak AgriLife, https://liveoak.agrilife.org/files/2011/07/Broadcast_Baits_Fireant_Control_1.pdf
- How to Kill and Prevent Fire Ants in Your Yard - Amdro, https://www.amdro.com/learn/fire-ants/the-two-step-method-to-fire-ant-control
- Natural Enemies of Fire Ants - Ant Pests, https://ant-pests.extension.org/natural-enemies-of-fire-ants/
- Potential Biological Control Agents for the Red Imported Fire Ant - Texas A&M AgriLife Research & Extension Center at Lubbock, http://lubbock.tamu.edu/files/2015/10/ENTO_008.pdf
- Treatment Methods | Fire Ants in Tennessee, https://fireants.tennessee.edu/treatment-methods/
- 7 Smells That Ants Absolutely Hate - Reliant Pest Management, https://reliantpest.com/7-smells-that-ants-absolutely-hate/
- Discover 14 Smells That Ants Absolutely Hate - A-Z Animals, https://a-z-animals.com/animals/ant/ant-facts/discover-14-smells-that-ants-absolutely-hate/
- farmingmybackyard.com, https://farmingmybackyard.com/fire-ants/#:~:text=Fire%20ants%20do%20not%20like,lemongrass%2C%20catnip%2C%20and%20garlic.
- Why Do I Have More Ants After Extermination? – Critter Wranglers, https://critterwranglerstn.com/ants/why-do-i-have-more-ants-after-extermination/
- Are fire ant baits toxic to humans and pets? – Ant Pests, https://ant-pests.extension.org/are-fire-ant-baits-toxic-to-humans-and-pets/
- Is Fire Ant Bait Granules by Amdro Safe For Pets | AnchorPest ..., https://www.anchorpestservices.com/is-pest-control-safe-for-pets/fire-ant-bait-granules-by-amdro