COLDKILL is an aerosol wasp and hornet killer capable of spraying up to 20 feet. This product kills wasps, hornets, yellow jackets and bees on contact. It also kills with residual action as wasps and hornets return to their nests. COLDKILL is electrically non-conducting and can be used both indoors and outdoors on wasp and hornet nests. It acts as a barrier to prevent insects from entering the home and prevents nesting.