Raid Ant & Roach Killer 26 is an effective insecticide spray, especially against carpenter ants and roaches, which its formula kills on contact and keeps killing with residual action for up to 6 weeks. Take back your space with this easy-to-use fragrance-free roach and ant spray. It can be applied to surfaces where ants, roaches and other listed bugs may be infesting. Kills a wide variety of household insects without any lingering chemical odor including roaches and carpenter ants, silverfish, crickets, earwigs, household spiders, multicolored Asian lady beetles, stinkbugs, scorpions, and black widow spiders.