This ready to use suspension provides effective control of flies and lice on lactating and non lactating dairy cattle beef cattle calves and horses. It controls both chewing or biting lice and sucking lice, with one application providing lice control. The formula has a zero day pre slaughter interval and no milk discard time, making it convenient for use in dairy operations. It can be used as part of an integrated pest management program, either alone or in rotation with other insecticides to help reduce the risk of resistance development. Active ingredients include 3.0 percent diflubenzuron and 5.0 percent permethrin.