Kills paper wasps, yellow jackets, mud daubers, bees and bald-faced hornets in seconds. Kills wasps and hornets on contact from 22 feet away so you can stay a comfortable distance from the nest. Kills in seconds--even larvae and pupae in nests. Its residual action kills wasps and hornets bold enough to return to the nest. Dielectric breakdown voltage rating 32,500 volts. No CFCs.