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.