Hot Shot 5580-1 No Pest Strip Unscented Hanging Vapor Insect Repellent, Case Pack of 12 PatternName: Case Pack of 12 Outdoor, Home, Garden, Supply, Maintenance Kills flying and crawling insects with a penetrating, odorless vapor Just hang or stand up in attics, garages, storage spaces and other non-living spaces Great for keeping insects out of boats, rvs and cabins when not in use one unit will treat a 10' x 13' room with an 8' ceiling for up to 4 months