Zero In WAS kills dangerous insects on contact, including wasps, hornets and yellow jackets. Use blast spray to saturate insect nests up to 15 feet away. Can be used on both outdoor nesting sites and indoors in attics, warehouses, parking garages, picnic shelters, etc. Zero In WAS is non-conductive so there's no need to worry about spraying near power poles or into electrical boxes. Stand comfortably on the ground and spray the product from a safe distance. No climbing on ladders or dodging dangerous swarms. EPA registered.