Raid Max Indoor and Outdoor Spider and Scorpion Insecticide Raid® MAX Spider and Scorpion Killer works directly on these pests and kills on contact. It s a fast acting spider spray that helps protect you and your family whether indoors or outdoors. It s also a roach killer ant killer earwig killer and water bug killer that offers effective protection with no lingering chemical odor. Re-treat every 7 weeks on porous surfaces and every 12 weeks on non-porous surfaces. Spray spiders and scorpions directly. Raid® MAX Spider and Scorpion Killer is part of the Raid® Defense SySTEM which uses a combination of products to help fight bugs in your home.