Raid Ant & Roach Killer 26 has a special insecticide formula that kills on contact and keeps killing roaches and carpenter ants with residual action for up to 6 weeks. Take back your space with this easy-to-use ant and roach spray It can be applied to surfaces where ants roaches and other listed bugs may be infesting. Kills a wide variety of insects including roaches ants silverfish crickets earwigs household spiders multicolored Asian lady beetles stinkbugs scorpions and black widow spiders. This fragrance free insect killer leaves no lingering chemical odor.