Prozap Insectrin CS 2.5 Gallon Prozap Insectrin CS contains 7.4% permethrin and 7.4% 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. Features: Insectrin CS is an oil based ready to use insecticide for effective control of flies, lice, sheep keds, mosquitoes and ticks on beef cattle, dairy cattle, horses and sheep. Contains 7.4% Permethrin and 7.4% PBO Ready to use as a pour on, wipe on and spray on animals or as a spot or premise spra Mix with mineral oil for backrubber use on cattle Specifications: Size: 2.5 Gallon Directions: 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.