Revenge, QT, Concentrate, Barn & Stable Fly Spray, Permethrin 13.3%, A Concentrated Premise & On Animal Preparation, May Be Fogged, Misted, Used In Automatic Spray Systems, Back Rubber Machines, Low Pressure Spray Systems, As A Spray, Dip Or Sponge On, Kills Virtually All Farm Premise & Livestock Pests For Up To 4 Weeks Pre Application.