ATCO's ASSAULT Wasp and Hornet Killer contains a Permethrin, Tetramethrin and Piperonyl Butoxide formulation that drops wasps, hornets and yellow jackets instantly and kills with a residual action as they return to the nest. ASSAULT has a dielectric breakdown voltage of 49,500 volts.  It features a jet spray that reaches up to 20 feet above ground and contains no CFC's or other ozone depleting substances. ASSAULT can be used both indoors (attics and other places where nests are built) and outdoors on wasps & hornet nests.