10 Best Indoor Ant Killers 2025 in the United States

The TERRO Ant Killer Bait Stations T300-3SR is a popular choice for those dealing with indoor ant infestations. Utilizing liquid bait, it effectively targets common household ants, especially those attracted to sweet substances. The active ingredient, Sodium Tetraborate Decahydrate (Borax), is known for its ability to kill ants by disrupting their digestive systems. This ensures the bait is lethal not only to visible ants but also to the entire colony, making it an effective long-term solution by reducing ant activity within days as worker ants spread the poison throughout the colony.

The design is user-friendly—pre-filled and ready to use with no setup necessary, which is particularly convenient for home use. The bait stations can be placed along baseboards, corners, and countertops, making them versatile in terms of placement around the house. This ease of use proves advantageous for those seeking a hassle-free pest control solution.

In terms of safety, while Borax is a naturally occurring substance, it is essential to keep these bait stations out of reach of children and pets to prevent accidental ingestion. The residual effect is beneficial, as it continues working indirectly by maintaining the bait presence until the liquid is fully consumed. On the downside, its effectiveness may vary depending on the type of ant and the size of the infestation. Additionally, some users might prefer a product with more natural or less toxic ingredients if children or pets are frequently in the area. Despite these considerations, its strong presence in the market underscores its reliability and effectiveness in pest control.

The TERRO T300B Indoor Liquid Ant Killer comes with 12 bait stations, making it versatile for placing around your home where ants are most active. It uses liquid baits with Borax as the active ingredient to attract and kill common household ants, including those you can't see. One of its main strengths is its fast-acting formula; you can expect a noticeable reduction in ant activity within days as it targets the entire colony. This makes it highly effective for long-term control of ants.

The product is designed to be user-friendly; there is no setup required, so you can simply place the baits and let them work. This ease of use is particularly appealing for busy households. However, a potential drawback is the safety concern if you have small children or pets, as Borax can be harmful if ingested. It's important to place the bait stations in locations that are out of reach of kids and pets.

Another consideration is that while it’s effective indoors, it might not be suitable for outdoor use. Additionally, while it kills the ants you don't see, this means you'll need to maintain the bait stations until the colony is entirely eradicated, which might require some patience. The TERRO T300B is regarded for its reliability and effectiveness for indoor ant problems.

The Hot Shot Pest Control Fogger is a convenient indoor solution for tackling heavy ant infestations, along with other pests like roaches and spiders. It uses a combination of active ingredients, Tetramethrin and Cypermethrin, which effectively kill insects on contact. This product's standout feature is its ability to create a fine mist that penetrates deep into cracks and crevices, ensuring hidden bugs are also eliminated.

It's designed for use in various enclosed spaces such as homes, garages, and storage areas, and each can covers a substantial area of 2,000 cubic feet, making it suitable for larger infestations. Users have appreciated its non-staining formula, avoiding any wet, messy residue post-application. The fogger's effectiveness lasts up to 2 months, providing a long-term solution to pest control problems.

However, it's essential to note that this product involves the dispersal of chemicals, which may raise safety concerns for households with children or pets. Users should ensure the treated areas are well-ventilated and avoid direct exposure during and after application. The need for multiple cans (18 provided in a 6-pack) might be seen as excessive for smaller spaces. The Hot Shot Fogger is effective and easy to use for significant pest issues but requires careful handling to ensure safety.