Skip to content
LokalMatch

Ants

Ants near you

Ants are the most common reason Americans call a pest control company, and the most common reason they call twice. A trail across a kitchen counter is the visible edge of a colony that lives somewhere else, usually outdoors, and killing the ants you can see does nothing to the ones you cannot. University of California IPM puts the failure plainly: spraying around the foundation will not provide permanent control, because it kills only foraging ants without killing the colony.

Tell us about your ant control project and we’ll help you find local exterminators who serve your area.

Free for homeowners · No obligation to hire

This type of work often has to be done by a licensed or certified trade. Ask to see licences and proof of insurance before work starts.
On this page

Which ant you have decides everything that follows. A sugar-seeking Argentine ant trail, an odorous house ant colony that has budded into a dozen satellite nests, carpenter ants excavating damp framing, and imported fire ants mounding in the lawn are four different jobs with four different answers. Fire ants in particular are a federal matter: USDA APHIS reports that imported fire ants infest more than 367 million acres across Alabama, Arkansas, California, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia and Puerto Rico, and warns that stings are painful and cause a burning sensation and itching blisters.

The last thing to settle is who may treat. There is no national license. EPA states that state, territorial and tribal authorities certify pesticide applicators, and that many states require all commercial applicators to be certified rather than only those using restricted use products.

The ants that come into American homes, and what each one wants

Identification is not a formality here. It determines whether the answer is a bait, a moisture repair or a lawn treatment, and a technician who does not name the ant is guessing.

  • Argentine ants, which UC IPM manages with liquid borate baits in refillable bait stations and describes as the reason most California ant programs are built around baiting rather than spraying.
  • Odorous house ants, which form large colonies with many queens and can split into satellite nests when a repellent spray is applied to the trail.
  • Pavement ants, which nest under slabs, driveways and walkways and forage indoors along expansion joints and slab edges.
  • Carpenter ants, which do not eat wood but excavate galleries in it, and whose presence is usually a moisture story before it is a pest story.
  • Imported fire ants, which USDA APHIS reports across the Southern states and parts of California and Puerto Rico, and which sting rather than bite.
  • Pharaoh ants, which are an indoor nesting species associated with heated buildings, and one of the clearest cases where spraying makes a problem worse by scattering it.
  • Field and mound-building ants that live entirely outdoors and enter only to forage, where the honest answer is often exclusion and patience rather than treatment.

Baits versus perimeter sprays, and why the trail is not the target

The single most useful thing an ant guide can tell an American homeowner is that the visible trail is the wrong target. UC IPM states that baits are a key tool for managing ants and the only type of insecticide recommended in most situations, precisely because a worker that carries bait back feeds the colony, including the queens the treatment has to reach. The same source is direct about the alternative: spraying around the foundation will not provide permanent control, because it kills only foraging ants without killing the colony.

Baiting also asks something of the homeowner that spraying does not, which is restraint. Wiping the trail away, spraying it with a household cleaner or setting a repellent product beside the bait all interrupt the recruitment that makes bait work. For Argentine ants specifically, UC IPM recommends liquid borate baits, at half a percent to one percent borate in sugar water, in refillable bait stations, and calls baits in refillable stations the safest effective treatment. A company that proposes a bait program and then asks you to leave a trail alone for a week or two is describing the method correctly, not neglecting the job.

Carpenter ants and fire ants: the two that are more than a nuisance

Carpenter ants are usually a symptom. They excavate galleries in wood that has been softened by moisture, which means the recurring find is a leaking window head, a failed deck ledger flashing, a plumbing drip under a sink or a roof leak nobody traced. Treating the ants and leaving the water alone produces exactly one outcome, which is another colony in the same framing in a year or two. Any serious carpenter ant proposal should name the moisture source and say who is fixing it, and if the framing has been excavated far enough to matter structurally, that is a carpentry question rather than a pest question.

Imported fire ants are a different category again, because they are regulated. USDA APHIS operates a federal quarantine covering the infested Southern states along with parts of California and Puerto Rico, established to prevent the human-assisted spread of the ants, and it regulates high-risk articles such as nursery stock, baled hay, soil and soil-moving equipment moving out of quarantined areas. That is why new sod, landscape plants or fill delivered to a yard can be the way a mound arrives, and why a landscaping contractor working in a quarantine area should know the rules. APHIS also notes that young and newborn animals are especially susceptible to the venomous sting, which is worth knowing before a mound near a pasture, a kennel or a play area is left to grow.

When ants appear, and why timing decides whether treatment works

Ant pressure is weather-driven, and the pattern repeats across most of the country. UC IPM notes that ants often enter buildings seeking food and water, warmth and shelter, or refuge from dry, hot weather or flooded conditions, which is why a kitchen invasion so often follows the first hard rain or the first stretch of real heat. The same guidance advises getting ahead of the invasion by caulking and baiting before it arrives, and says treatments made in late winter and early spring, when ant populations are just beginning to grow, will be most effective.

That flips the usual instinct. Most homeowners call when the trail appears, which is the point at which a colony is already large and food-driven. The cheaper program starts before the season does, in late winter and early spring in mild climates, with exclusion done at the same time rather than afterward. In the northern half of the country the window shifts later but the logic is unchanged: bait early in the foraging season, and treat a midsummer trail as evidence that the preventive work was skipped rather than as the natural moment to start.

What a competent ant job looks like

  • An inspection that identifies the species and finds where the trail goes, indoors and out, before any product is chosen.
  • A moisture check wherever carpenter ants are suspected, including under sinks, around window and door heads, at deck ledgers and below roof penetrations.
  • A bait plan with the bait matched to what the ants are currently feeding on, since the same colony shifts between sugar and protein through the season.
  • Stations placed where children and pets cannot reach them, which EPA sets out as the rule for bait use in a home.
  • Exclusion work on the paths ants are actually using: slab edges, utility penetrations, weep holes, window frames and the gaps where siding meets trim.
  • Yard-level work where the colony lives outdoors, including vegetation touching the house and mulch piled against the foundation.
  • A follow-up visit to check whether bait is being taken and to change the bait if it is not, rather than a repeat of the same application.

Making the kitchen and the foundation less worth visiting

EPA frames household pest prevention around three needs: like humans, pests need food, water and shelter to survive, and taking any one of them away shrinks the problem before a product is involved. For ants that means sealed food containers rather than open boxes, spills and crumbs cleaned the same day, pet bowls emptied overnight, and recycling rinsed rather than stacked. Water is the one people forget, and a slow drip under a sink or a leaking outdoor spigot will keep a trail alive through a drought when nothing else in the yard is wet.

Outside, the fixes are structural rather than chemical. Trim branches and shrubs that touch the siding, because they are a bridge that bypasses everything applied at ground level. Pull mulch back from the foundation, grade so water runs away from the house, and keep firewood off the ground and away from the wall. Then close the openings: Cornell IPM recommends caulk, sealant for movable joints, copper gauze and foam insulation for cracks and other small openings, and the same work that keeps ants out keeps mice and other pests out as well.

The license the person spraying your kitchen actually holds

Ant treatment is structural pest control, and in most of the country that is a licensed activity. EPA states that state, territorial and tribal authorities certify applicators, that federal law requires certification for anyone who applies or supervises restricted use pesticides, and that many states require all commercial applicators to be certified rather than only those using restricted use products. It also advises checking whether your state has requirements stricter than the federal ones, which several do.

Two states show how specific this gets. California's Structural Pest Control Board defines Branch 2, General Pest, as the practice relating to the control of household pests excluding fumigation with poisonous or lethal gases, which is where an ant job belongs. Texas requires licensing of businesses and individuals that perform structural pest control for hire under the Structural Pest Control Act, Chapter 1951 of the Occupations Code, and separates its licenses into categories, one of which is pest control covering general insects and animals. Ask which category the person at your door is certified in, and confirm it with the state board rather than with the company.

What an ant quote is really pricing, and how LokalMatch fits in

Ant pricing is driven by how much of the work is diagnosis and exclusion rather than by the product in the can. The variables are the species and whether it nests indoors or out, how many trails and entry points were found, whether a moisture defect has to be repaired before treatment is worth doing, how large the perimeter is and how much vegetation touches it, whether a lawn or a mound population is part of the scope, how many follow-up visits are included, and whether sealing work is quoted with the treatment or left for you to arrange. Ask for the species in writing, and for the exclusion work as a separate line.

LokalMatch is where the search begins. You describe the problem once: where the trail is, how long it has been there, whether you have seen winged ants or sawdust-like shavings, and whether the yard has mounds. Pest control companies that serve your area receive the request, and the ones interested reach out to you. Pros pay for the requests they receive, and there is no charge to the homeowner. LokalMatch does not identify or treat ants, does not set prices, and does not endorse, rank or screen any company, so checking the state certification, the insurance and the written plan remains with you.

Ants: frequently asked questions

Why do the ants come back after the exterminator sprays?

Because the spray reached the wrong insects. UC IPM states that spraying around the foundation will not provide permanent control, since it kills only foraging ants without killing the colony, and that baits are the only type of insecticide recommended in most situations. Some species also respond to a repellent spray by budding into additional nests, which turns one problem into several.

Should I wipe up the ant trail while the bait is out?

Not on the route to the bait. The trail is how workers recruit each other to the bait and carry it back to the colony, which is the entire mechanism. Cleaning the counter away from the station is fine, but spraying the trail with a household cleaner or a repellent product beside the bait undoes the treatment you are paying for.

Do carpenter ants eat the wood in my house?

No. They excavate galleries in wood to nest in it rather than feeding on it, which is why a carpenter ant find is usually a moisture find first. The productive questions are where the water is getting in and who is fixing it. Treating the ants without repairing the leak generally buys a new colony in the same framing.

Are fire ants regulated differently from other ants?

Yes. USDA APHIS runs a federal imported fire ant quarantine covering the infested Southern states along with parts of California and Puerto Rico, reporting more than 367 million acres infested, and it regulates the interstate movement of high-risk articles such as nursery stock, baled hay, soil and soil-moving equipment out of quarantined areas. New sod or landscape plants can be how a mound arrives in a yard.

When is the best time to start an ant program?

Earlier than most people call. UC IPM advises caulking and baiting before the influx and says treatments made in late winter and early spring, when ant populations are just beginning to grow, will be most effective. It also notes that ants come indoors seeking food, water, warmth and shelter, or refuge from dry hot weather or flooding, which is why invasions track the weather.

Is the bait safe around children and pets?

It depends on how it is placed, and EPA gives the rule: if you use baits, make sure they are in a tamper-resistant bait station made of durable plastic or metal, and place them where children and pets cannot touch them. Ask the company to show you where every station is, and to come back and collect them at the end of the program.

Sources

  1. UC IPM Pest Notes: Ants
  2. USDA APHIS: Imported Fire Ants
  3. EPA: Do You Really Need to Use a Pesticide?
  4. EPA: How to Get Certified as a Pesticide Applicator
  5. EPA: Introduction to Integrated Pest Management
  6. California Structural Pest Control Board: The Three Branches of Structural Pest Control
  7. Texas Department of Agriculture: Structural Pest Control Licensing
  8. Cornell Integrated Pest Management: Pest Exclusion

Written by the LokalMatch editorial team. Last reviewed September 21, 2026. How we write and check our guides

Find exterminators by city

Alaska

Show 1 cities

California

Show 186 cities

Delaware

Show 1 cities

Florida

Show 82 cities

Maine

Show 1 cities

What affects the cost of ant control

Prices depend on the details of your project. We only publish price ranges when they’re backed by real LokalMatch quote data or reliable sources. Until then, here’s what usually changes the price:

  • Type of pest or animal
  • How widespread the problem is
  • Size of the home and number of units affected
  • Treatment method
  • Number of follow-up visits
  • Exclusion work, such as sealing gaps or installing barriers

How to compare exterminators before you hire

  • Choose a company that inspects first and identifies the pest before recommending treatment.
  • Ask whether they are licensed to apply pest control products in your area.
  • For wildlife like raccoons, squirrels or birds, look for a company that uses humane removal and seals entry points.
  • Ask how they'll keep children, pets and food safe during and after treatment.
  • Get the treatment plan in writing, including follow-up visits and what happens if the problem comes back.

Questions to ask exterminators before you hire

  • What pest do you think this is, and how did you identify it?
  • Are you licensed to apply pest control products in my area?
  • What products or methods will you use, and are they safe around children and pets?
  • How do I need to prepare my home before treatment?
  • How many visits are included, and what happens if the problem comes back?
  • Will you seal entry points so the problem doesn't return?

When to call a pro for ant control

  • Droppings, gnaw marks or scratching noises in walls or the attic
  • Bites or small blood spots on bedding that could point to bed bugs
  • A wasp or hornet nest near a door, deck or play area
  • An animal living in the attic, chimney or under a deck

Ant control permits and local rules

Some ant control work needs a permit or has to meet local bylaws. Rules vary by municipality, so ask your pro whether a permit is needed and who will apply for it — and check with your city or town if you’re unsure.

Permits and licensing

Ready to get ant control quotes?

Tell us about your ant control project.

Do you offer ant control services?

Join LokalMatch to get matched with homeowners in the areas you serve.