Control Solutions Inc.’s Stryker Wasp and Hornet Killer, featuring 0.1 percent prallethrin, kills wasps, spiders, hornets and yellowjackets on contact up to 20 feet away, providing applicator safety. Use the 15-ounce can outdoors and in attics and crawlspaces. The company notes that this formulation can knock down wasps and hornets so quickly that they cannot release their stinging pheromones, therefore reducing the possibility of stings. Its residual activity ensures nest elimination. The product is electrically non-conducting up to 37,160 volts, making it usable around electrical equipment.