Prozap Insect Guard is a solid, ready-to-hang pest control strip built around an 18.6% Vapona (dichlorvos) active ingredient. The strip works through vapor action to reach flies, gnats, mosquitoes, moths and a range of crawling insects throughout an enclosed space. Each strip is sized to treat up to roughly 1200 cubic feet and continues working for up to four months before it needs replacing. It is designed for unoccupied interior spaces such as garages, attics, crawl spaces, sheds and basements, as well as barns, stables, tack rooms, kennels and other farm buildings, including raw grain storage and garbage collection areas. Setup requires only removing the strip from its sealed packaging and hanging or placing it in the target space away from windows and out of reach of children and pets. The twelve-count case supplies individually packaged strips so each unit stays sealed and at full strength until it is put into use.