6 Best Ant Killing Powders 2026 in the United States

The Ortho Fire Ant Killer Broadcast Granules are designed specifically for outdoor use to tackle fire ant infestations. One of its main strengths is its fast-acting formula, which can kill fire ant mounds within 15 minutes. This is particularly beneficial for those looking for immediate results. Additionally, it offers up to 6 months of protection, which helps in preventing new mounds from forming and offers long-term benefits.

The granules are easy to apply with a drop or broadcast spreader, and a single 11.5 lb. bag can treat up to 5,000 sq. ft. of lawn, making it suitable for larger areas. However, it does require watering in, as directed, to activate the granules, which may be seen as an extra step for some users. Safety is a consideration, and while the product is effective for ants, it's essential to follow the instructions carefully to avoid any risk to pets or humans.

Many users praise its effectiveness, but a few have noted that it might not completely eradicate all ants, necessitating follow-up treatments. This product is best suited for homeowners dealing with fire ant issues in their lawns and looking for a relatively easy and long-lasting solution.

The Ortho Fire Ant Killer Mound Treatment1 is designed to tackle fire ant problems effectively. One of its main strengths is its quick action, as it kills fire ant mounds within 15 minutes, including the queen, which is crucial to stopping the colony.

It's versatile enough for use on residential lawns, ornamental plants, and flower gardens, providing flexibility in various outdoor spaces. The application process is straightforward: apply 2/3 cup of the product to the mound and surrounding area, then soak with water, making it reasonably easy to use even for those without extensive pest control experience.

However, it's important to note that it requires specific temperature conditions (between 65°F to 80°F) and should be applied when ants are most active (early morning or late evening) for best results. One potential drawback is the need to handle and store it safely, as with any chemical product, to avoid any unintended impact on pets or children. The Ortho Fire Ant Killer Mound Treatment1 is a reliable and user-friendly solution for those experiencing fire ant issues, offering fast and effective results with proper application.

The TERRO T600 Ant Dust Powder is designed to kill various insects, including different types of ants like fire ants and carpenter ants, as well as roaches and spiders. Its active ingredient is effective on contact, providing quick results. One strong point is its waterproof formula, which means it remains effective even after rain, an important feature for outdoor use. You can apply it both indoors and outdoors—in places such as cracks, crevices, around building foundations, and even directly on ant hills, making it quite versatile.

The dust works for up to 8 months, offering long-lasting protection without frequent re-application. The product comes in a shaker canister, which makes it easy to spread the powder evenly without much hassle. While it’s effective against many pests, it is primarily targeted at ants and similar insects, so it may not solve all pest problems.

If you’re looking for a reliable and long-lasting ant killer that’s easy to use both inside and outside your home, this powder is a solid choice.