Mortein PowerGard DIY Indoor Outdoor Surface Spray prevents insect infestations by killing cockroaches, ants and spiders for up to 6 months inside and outside the home. Allows easy access to hard to reach places (up to 3m away for outdoor use). Using the same spray technology that professional pest control operators use, the spray flushes spiders and cockroaches out of their hiding places outside. Ants, spiders and cockroaches are killed on contact for up to 3 months outdoors and 6 months indoors.