What Do Exterminators Use For Ants?

The baits and active ingredients pros use to reach the colony, not just the ants you see

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Last updated August 1, 2026 Ants Ryan Marshall

Ants can create colonies in various outdoor settings and commonly penetrate properties in search of food or water. If you have an ant problem, especially if they are already setting up house in your walls or other nooks and crannies, it’s important to deal with them swiftly before they multiply out of control!

Trail of black ants moving across a textured surface, the foraging behaviour ant baits target

Like most homeowners, you may have questions about how this process works. One of the most common concerns is what chemicals exterminators use to kill ants, it’s important to know what these are so that you can feel comfortable with the procedure.

Boric Acid

One of the most frequently used chemicals in pest control is boric acid. Typically, it disperses as a powder throughout the home. In addition to being used to kill ants, it is also effective against termites and cockroaches. Because of its sweetness, boric acid draws ants. Then when it is digested, it poisons their stomachs. Even better, the ants mistake the boric acid for sugar when they bring it back to their nest, poisoning their species.

Piperonyl Butoxide

Piperonyl butoxide is an additive used to increase the potency of many pesticides, despite not being a poison on its own. Ants’ metabolism is slowed down by piperonyl butoxide, which makes them more vulnerable to poison. There is a good chance that your exterminator will add Piperonyl Butoxide to the mix if they use any of the pesticides mentioned above.

Hydramethylnon

Numerous pests, including ants, crickets, silverfish, and cockroaches, are killed by hydramethylnon slowly but effectively. The ants won’t be instantly killed by hydramethylnon. Instead, it kills them gradually over a few days, allowing the ants plenty of time to transport a large quantity of the chemicals back to their nest. Over time, this will kill many ants, eventually solving your problem entirely.

Fipronil

Since it is less toxic than hydramethylnon, fipronil is a suitable poison. An ant’s nervous system is attacked by fipronil when it comes into contact with an ant. Ants are known to frequent ant nests and entry points, so fipronil is typically placed there. Numerous pests, including ants, beetles, ticks, cockroaches, and fleas, are drawn to the moldy smell of fipronil.

How Exterminators Eliminate Ant Infestations?

When homeowners hire an exterminator to solve pest problems, they must first determine the source of the infestation and find out why it happened. Exterminators must identify the type of ant causing concern before taking any action. Once they have determined that a problem exists, the next step is to assess it and identify what type of treatment will eliminate the issue. To offer tailored solutions for their customers, they must collect as much data as possible on each client. For instance, the treatment used to eliminate ant hills and other pests can harm children, pets, and adults; therefore, it’s necessary to consider these concerns before taking action.

The exterminator will recommend the safest treatment, one that is both effective and non-poisonous.

Final Thoughts

Exterminators may use different chemicals to eradicate ants, depending on the situation. Multiple treatments may be needed if a particular ant species have developed an immunity to one of those chemicals. Contact a professional for advice and assistance if you need help with an ant problem. At Vinx Pest Control, we’ll clean up the ant infestation quickly, efficiently, and safely and ensure that the ants don’t return.

Further reading: see the guidance from Clemson Cooperative Extension.

Frequently Asked Questions

Boric acid, hydramethylnon, and fipronil are among the most common. Boric acid is usually dispersed as a powder and poisons ants that eat it, and because it tastes sweet they carry it back to the nest as food. Fipronil attacks an ant's nervous system on contact and is placed at nests and entry points.

Piperonyl butoxide is not a poison on its own. It is an additive that slows an ant's metabolism, which makes the ant more vulnerable to the pesticide it is paired with. Many products include it to boost potency.

The slow kill is deliberate. Hydramethylnon does not drop ants on contact; it works over a few days, which gives workers time to haul a large amount of material back to the nest. That reaches the rest of the colony instead of only the ants foraging on your counter.

The first step is finding the source of the infestation and identifying the ant species, since treatment differs by species. From there the technician assesses how far it has spread and gathers details about the property, including children and pets in the home. The recommendation is the safest option that will still do the job.

Some species develop tolerance to a product that used to work, in which case multiple treatments or a different active ingredient are needed. Large colonies can also survive a single application. Ongoing service handles both that and new colonies moving in from outside.

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