TERRO Ant Killer 1 lb. (Pack of 12)TERRO Ant Dust kills many problem pests including: fire ants and carpenter ants, boxelder bugs, cockroaches, crickets, firebrats, spiders, ticks, wasps and silverfish. This unique, ready to use dust is waterproof and wont wash away in the rain. For use indoors or outdoors, Ant Dust kills on contact and provides up to eight months of protection. This product is ideal for crack and crevice treatments and can even be applied directly on top of fire ant