Easy to use, broad spectrum insect control against both flying insects and crawling insects. Kills gnats, flies, moths, mosquitoes, spiders, and various other crawling insects. Ideal for indoor use in un-occupied areas in the home, garages, attics, crawl spaces, sheds, and basements. Also ideal for use in barns, stables, tack rooms, kennels, farm buildings, raw grain bulk storage areas, and garbage collection areas. Treats up to 120 cubic feet through vapor action, not for use in areas where humans are present for more than 4 hours at a time. 18.6% Vapona for fast and effective control. Lasts about 4 months.