Ortho, 16 oz, aerosol, hornet & wasp killer, kills wasps, yellow jackets, mud daubers & hornets, entrapping foam stops wasp instantly, kills insects that return to the nest, jet spray reaches nests 20 feet above ground, pinpoint accurate foam reaches nest under roof eaves, around carports, doorway, window frames & other outdoor areas. Active ingredient(s):0.20% Tetramethrin, 0.20% Sumithrin