Black Flag Wasp, Hornet & Yellow Jacket Killer Aerosol, 14 oz Black Flag Wasp, Hornet & Yellow Jacket Killer Aerosol 14oz Wasp, Hornet & Yellow Jacket Killer is designed to kill wasps, hornets and yellow jackets, and eliminate the nests where they live and breed Jet spray reaches nests up to 29 ft. above ground Active Ingredients: Prallethrin, Lambda Cyhalothrin This product is made in United States Kills on contact Eliminates the nest Up to a 29-foot jet spray