Melinda writes
Clean air purge will kill spiders if they are out in the open when you set the can off into the room. Clean Air Purge will not leave a residual or kill new spiders entering the area. Our best liquid application for spiders is Demon WP. It can be used outdoors as well as indoors and will continue to kill insects and spiders for up to 30 days after application.
Answer last updated on: 10/23/2010