Keep your hooved friends safe and protected all year round with Martin's Permethrin 1% Synergized Pour-On Insecticide for Cattle! It contains 1% permethrin and 1% piperonyl butoxide. It’s effective in killing flies， lice， keds， face flies， horn flies， mosquitoes and ticks. It can be used as a pour-on， back rubber or ready-to-use mist spray. It’s safe for use on sheep， beef cattle， lactating and non-lactating dairy cattle， cows， calves and lambs. Just one gallon will treat 25 heads of 1，000 lb. cattle!