Fire ants build fast, sting hard, and shrug off most of what people try on them. The reason is simple: only a small fraction of a colony is above ground at any moment, so killing the ants you can see barely dents the population underground.
What works is bait, applied correctly, on a schedule. Here’s how to identify them, how to treat them, and the application detail that decides whether it works.
Key Takeaways
- Sprays reach foragers only. Bait is what reaches the queen, because workers carry it back and share it through the colony.
- Apply bait around the perimeter of a mound, never on top, in late afternoon when the ground is warm and dry.
- Fire ants thrive year-round in Florida and Georgia. No winter die-off, so colonies rebuild continuously.
- Expect two to three bait applications a year: spring, midsummer, and fall.
- Stings carry real medical risk, and disturbing a mound brings hundreds of ants at once.
How to Identify Fire Ants
Before treating, confirm what you have.
The mound. Dome-shaped piles of loose soil, often one to two feet across, in sunny, disturbed ground, open lawn, garden beds, sidewalk edges, driveways. The giveaway is that fire ant mounds have no visible entry hole on top. Other ant mounds usually do.
The behavior. According to Texas A&M AgriLife Extension, disturbing a mound brings workers out fast, and they run up vertical surfaces to reach whatever disturbed them. They bite to grip, then sting.
The lookalike. Mound ants (Formica spp.) build similar mounds but don’t sting. They bite and release formic acid instead. In Georgia they’re mostly confined to the northwest corner of the state.
Don’t test a mound with a shovel or your foot. That’s how people end up with dozens of stings in seconds.
How to Spot a Fire Ant Infestation
| Sign | What It Looks Like | What It Means |
| Mounds | Dome-shaped piles of loose soil, 1–2 feet across, no entry hole on top | Active colony beneath, often thousands of ants |
| Trails | Lines of ants traveling to food or water | Colony foraging aggressively; nest is nearby |
| Stings | Burning pain, then itchy white pustules | Direct contact; high population density close by |
| Damage | Chewed roots, seedlings, electrical wiring | Infestation is affecting landscaping or utilities |
Indoor sightings usually mean an outdoor colony close to the foundation. A single trail of workers typically runs in, collects food, and runs back out to a nearby mound , following it is the fastest way to locate the nest.
Why Fire Ants Are a Problem in the Southeast
Warm weather and humidity let fire ants stay active year-round in Florida and Georgia. There’s no cold snap to force a die-off, insect prey and plant growth supply constant food, and sandy soil makes deep tunnel systems easy to build.
Each queen lays hundreds of eggs a day, and a colony can hold several queens at once. When threatened, colonies can split and form new ones, which is why a disturbed mound sometimes becomes two mounds a week later.
Their aggression is what makes them different from other ants here. Hundreds sting at once when a mound is disturbed, and the venom they inject causes the characteristic pustules, allergic reactions, and occasional infections. Pets and livestock that step on a mound take dozens of stings in seconds.
How to Get Rid of Fire Ants
Step 1: Cut the food and water supply
Secure trash bins with tight-fitting lids, bag waste before it goes in, and clean the bin area regularly. Bring pet food in rather than leaving it out, and keep outdoor feeding areas clean. Reduce standing water in gutters, plant pots, and pet bowls.
This won’t clear an infestation on its own. It slows colony expansion and makes the bait in step 2 more attractive by comparison.
Step 2: Bait, and apply it correctly
Bait is the core of fire ant control. Workers collect it, carry it back, and feed it through the colony to the queens, which is the only route to actually ending a colony rather than trimming it.
How you apply it decides whether it works:
- Sprinkle bait around the perimeter of the mound, never on top. Bait dropped on the mound gets treated as an intrusion rather than food.
- Apply in late afternoon, when temperatures are warm and the ground is dry. Foraging peaks then, and wet ground ruins most bait formulations.
- Don’t water or mow immediately after. Both undo the application.
Bait works slowly compared to a contact spray. That’s the point – a product that killed foragers on contact would never make it back to the queen.
Step 3: Treat individual mounds where needed
Mound treatments give faster visible results and work well alongside bait for high-traffic areas you need cleared quickly.
Boiling water kills only the ants it reaches and rarely gets the queen, let alone several of them at different depths. Treat it as a stopgap.
Mound drenches are more effective, though UF/IFAS Extension notes they often fail to reach a queen deep in the nest. Useful for immediate relief, not for elimination.
Step 4: Broadcast treat the wider area
Fire ants spread well beyond their visible mounds through satellite nests and tunnels with no surface sign. Apply baits or insecticides evenly across infested areas to reach those hidden access points.
Broadcast treatment supplements mound treatment rather than replacing it.
Step 5: Seal, monitor, and repeat
Inspect around foundations, patios, and walls for soil cracks and activity, and backfill or repair openings you find.
The realistic goal is keeping the area immediately around the building mound-free, not eradicating fire ants from the property. If the colony extends past your boundary, reinvasion is a matter of when.
In areas with heavy pressure, bait two to three times a year: spring, midsummer, and fall. Consistency matters more than intensity, because colonies reappear throughout the warm months.
Why DIY Usually Falls Short
Only a small percentage of a colony is outside the nest at any given time. Killing visible foragers leaves the queens, brood, and the bulk of the workers untouched underground, and the colony refills the gap within days. That’s the single reason most store-bought approaches disappoint.
Many of the more effective fire ant products also require a licensed applicator, so homeowners are working with a narrower toolkit from the start.
When to Call Professionals
Persistent infestations. If mounds keep reappearing after treatment, something in the approach isn’t reaching the colony. Professional programs combine bait, residual treatment, and follow-up rather than relying on one method.
Large-scale problems. Schools, playgrounds, and agricultural property need equipment and permits most homeowners don’t have.
Health and safety. Fire ants swarm whoever disturbs the nest, and anyone nearby. With children, pets, or elderly people on the property, that risk sits with the person applying the treatment. Severe reactions can develop within 24 hours and occasionally need emergency care.
Nextgen Pest Solutions technicians are university-certified and carry products not available at retail. Work is guaranteed. If the ants return, so do we, at no charge. Ongoing plans are available for high-pressure properties.
Frequently Asked Questions
How do I know if it’s fire ants?
Dome-shaped mounds in sunny, open ground with no visible entry hole on top. Disturbing one brings workers out immediately, running up any vertical surface. If you’re unsure, don’t test it and have it inspected.
Can I handle fire ants myself?
Bait applied correctly and on schedule can work on light pressure. Heavy infestations, multiple mounds, or colonies extending beyond your property usually need professional-grade products and repeat visits.
Do fire ants damage plants or landscaping?
Yes. They feed on roots, stems, seedlings, buds, and developing fruit, and large mounds can smother nearby plants.
Can fire ants harm electrical equipment?
Yes. They’re drawn to electrical fields and infest circuit boxes and AC units, which gets expensive.
What should I do if my pet is stung?
Brush the ants off rather than washing them off first, since water doesn’t dislodge them. Then gently clean the area and watch for a severe reaction.
What other ants bite in Georgia?
The Asian needle ant is the main one, an invasive species with a painful sting that can cause anaphylaxis in sensitive people. Fire ants are the other common stinging ant here.
