Raid Ant Killer 26 has a formula that kills on contact and keeps killing with residual action for up to 4 weeks* *Carpenter Ants. Take back your home with this easy to use ant spray. It can be applied to surfaces where ants and other bugs are found. Kills a wide variety of insects including Ants Roaches Crickets Earwigs Household Spiders Multi-Colored Asian Lady Beetles Silverfish and Stinkbugs.