The clean, odorless vapor is evenly distributed throughout the enclosed treatment area, killing visible and hidden insects on contact and preventing new insect infestations while you’re away. Just hang or stand up in garages, storage units, attics and more. For use in the following: vacation homes, farm houses, mobile homes, ranch houses, cabins, boats-that are unoccupied for more than 4 months immediately following placement of pest strip. Garages, attics, boathouses, museum collections, storage units, crawl spaces, sheds-occupied by people for less than 4 hours per day. Controls flies, mosquitoes, gnats and other insects as listed. Trash dumpsters: for control of flies in dumpsters, attach appropriate sized strip (one strip treats 900-1,200 cubic feet) inside dumpster. Keep lid on dumpster closed.