Prozap Insectrin CS contains 1% permethrin and 1% piperonyl butoxide. Use as a pour-on, mist spray, or backrubber. When treating dairy cattle, beef cattle, and calves, it effectively controls horn flies, face flies, and lice, plus aids in the control of horse flies, stable flies, house flies, mosquitoes, black flies, and ticks. Apply 2 ml per 100 lbs., up to a maximum of 20 ml. Can be applied as a spray or wipe-on. Repeat treatment as needed, but not more than once every two weeks. Cattle rub: mix 10.5 oz. in 5 gallons mineral oil. When treating sheep as a pour on for lice and keds; apply 1 ml per 50 lbs. body weight, up to a maximum of 12 ml. When treating horses and foals, Prozap Insectrin CS effectively treats stable flies, horn flies, face flies, house flies, eye gnats, and ticks, and aids in the control of horse flies, mosquitoes, and black flies; apply 8 to 16 ml as a wipe-on or spray. As a ready-to-use premise spray, 500 ml will treat approximately 7200 square feet.