This synergized pour on insecticide controls lice and flies on beef cattle lactating and non lactating dairy cattle and calves when applied as a pour on mist spray or back rubber. It also controls keds on sheep and lambs as a pour on and flies on horses when used as a wipe on pour on or ready to use spray. The formula can be applied as a premise spray in and around animal housing for added protection. One gallon treats up to 252 head of 1000 pound cattle with up to four weeks of residual control. Active ingredients include 7.4 percent permethrin and 7.4 percent piperonyl butoxide.