10 Best Ant Killer Indoors 2025 in the United States

The TERRO T300B Indoor Liquid Ant Killer is a fast-acting solution designed to reduce ant activity within days. Utilizing 12 bait stations, it employs borax as the active ingredient, which is effective in attracting and eliminating common household ants, including those hidden in colonies that aren't immediately visible. This product's ease of use stands out, as it requires no setup—simply place the bait stations where ant activity is observed, such as along baseboards or on counters. This makes it a versatile option for various spots in the home.

Safety-wise, the liquid bait is contained within the stations, but it's essential to keep them out of reach of pets and children due to the chemical content. The product does not mention any strong odor, which suggests minimal disruption to your indoor environment. One potential drawback is that it requires monitoring and replacing bait stations as they become depleted, which could involve some ongoing maintenance. Additionally, while effective against sweet-eating ants, it may not be as effective for other types of ants or pests.

The TERRO T300B is a reliable choice for those dealing with indoor ant infestations, especially if you prefer a ready-to-use, low-odor solution.

The Ortho Home Defense Insect Killer for Indoor & Perimeter2 stands out as a versatile insect killer that targets a wide range of pests including ants, cockroaches, spiders, fleas, and ticks. Its primary strength lies in its ease of use, thanks to the Comfort Wand which eliminates hand fatigue and requires no pumping. This makes it particularly user-friendly for those who might struggle with traditional spray bottles. In terms of effectiveness, it not only kills insects but also creates a barrier that can prevent new infestations for up to 12 months on non-porous indoor surfaces, which is a significant advantage for long-term pest control.

Additionally, the product is odor-free and non-staining, making it suitable for indoor use without leaving any unpleasant smells or marks. Safety-wise, it is reassuring to know that people and pets can re-enter treated areas once the spray has dried, reducing concerns about harmful residues. However, a potential drawback is the large volume of the product, which might be cumbersome to handle and store, especially for those with limited space. Also, despite its high effectiveness, the product may not be ideal for those looking for a more natural or organic ant killer solution.

This insect killer is highly effective and convenient for those dealing with a variety of indoor pests, provided that the product's size and chemical formulation align with the user's needs.

The Hot Shot Pest Control Fogger is designed to tackle indoor pest issues, including ants, roaches, and spiders. It's a fogger type which means it creates a mist that can penetrate deep into cracks and crevices, effectively targeting both visible and hidden bugs. The fogger contains Tetramethrin and Cypermethrin as active ingredients, which are known for their quick action in killing insects on contact. This product is particularly effective for heavy infestations and continues to kill for up to two months after application.

A significant advantage is that it does not leave a wet or messy residue, making it easier to use without worrying about staining surfaces. Each can covers a substantial area of 2,000 cubic feet, which is suitable for large spaces like basements, attics, or garages. However, safety is a concern, as the product needs to be used in enclosed spaces, and users should ensure that pets and people are not present during application. Additionally, while it includes an odor neutralizer, some users might still find the smell noticeable.

In summary, the Hot Shot Pest Control Fogger is a powerful and convenient solution for those dealing with severe indoor pest infestations, albeit with some considerations for safety and odor.