10 Best Carpenter Ant Killers 2025 in the United States

The TERRO T300B Indoor Liquid Ant Killer with 12 bait stations is a highly effective solution for tackling indoor ant infestations. Its active ingredient, Borax, is well-known for its ant-killing properties. This liquid formulation ensures that ants are quickly attracted to the bait, which they then carry back to the colony, leading to a noticeable reduction in ant activity within a few days. This makes it an excellent choice for those dealing with a widespread ant problem indoors.

The product's design allows for easy placement along baseboards, in corners, and on counters, effectively targeting common household ants such as acrobat, crazy, ghost, little black, odorous house, and pavement ants, among others. Users will appreciate the ready-to-use feature, which requires no setup and provides a hassle-free application method.

Safety-wise, Borax is generally considered safe when used as directed, but it is always important to keep it out of reach of children and pets. The residual effect is strong as it continues to attract and kill ants over time, ensuring long-term control. The TERRO T300B is a reliable and user-friendly option for those needing an indoor ant control solution with minimal effort and maximum results.

The Spectracide Terminate Termite & Carpenter Ant Killer is designed to combat wood-destroying insects like termites, carpenter ants, and carpenter bees. It uses Lambda-Cyhalothrin as its active ingredient, known for its effective insect-killing properties. This product comes in a large 1.33-gallon ready-to-use spray bottle, making it suitable for both indoor and outdoor use. It has a clear formula that doesn't stain and leaves no lingering odors, which is great for maintaining the appearance and comfort of your home.

The AccuShot sprayer provides a continuous, precise application, ensuring that you can target specific areas without much hassle. This feature enhances its ease of use, especially for those who may not be experienced with pest control products. It offers up to 9 months of control indoors, which means you don't have to reapply it frequently, saving you time and effort. However, since it's a chemical-based product, safety precautions should be followed diligently to avoid any health risks, especially around children and pets.

While it is EPA-approved, which adds a level of safety assurance, some users may still prefer more natural alternatives. The product's weight (12.26 pounds) might be a bit cumbersome for some users, and the large size may be more than what’s needed for smaller infestations. Considering its features, this product is a strong choice for those dealing with persistent wood-destroying insects and looking for a potent, long-lasting solution.

The TERRO T1813B Outdoor Ready-to-Use Liquid Ant Bait Stake Killer Trap is designed to attract and eliminate common household ants, including carpenter ants, using 12 liquid bait stakes.

Its active ingredient effectively eliminates both the ants you see and those in the colony, ensuring a comprehensive solution. The liquid formulation is highly attractive to ants, leading them to consume the bait and share it with the colony, which helps in eradicating the entire nest within a few days. This makes it a fast-acting solution for ant infestations.

Another advantage is its ease of use; simply insert the stakes into the ground and cut the tab to activate, making it a hassle-free option for outdoor ant control. Its design is specifically tailored for outdoor use, addressing the issue at its source before ants can enter your home. The TERRO T1813B offers an effective, easy-to-use solution for outdoor ant control.