Terro 16 OZ Aerosol Spider Killer helps you in getting rid of these pesky crawlers instantly. The spray contains pyrethrin and deltamethrin, which eliminates spiders and creates a barrier that keeps them from coming back for up to 6 weeks. Use it in their hiding places like behind sinks, baseboards, inside cabinets and around drains for best results. This indoor and outdoor spray also eliminates ants, cockroaches, beetles, bed bugs and scorpions. It comes in a handy 16oz spray bottle.