(Intervet Schering-Plough) Synergized Delice contains permethrin and piperonyl butoxide as a synergist. Faster knock-down of pests, yet low toxicity. Safe for beef, lactating dairy, sheep, and premises. Use as a pour on spray mist or on back rubbers. Can be used in kennels or dairy barns to control house flies stable flies face flies gnats mosquitoes and aids in control of cockroaches ants spiders and crickets. Pour on at the rate of 1/2 oz. per lbs. to a maximum of 5 oz. Ready to use as a spray. Cattle rub: 1 qt/2 gal. diesel or mineral oil.