The SWEETLIX Kowpoke family of minerals is formulated to provide supplemental minerals and vitamins to beef cows and heifers on grass in a cost-effective package. All Kowpoke formulas are fully weatherized with RainBloc and have superior palatability. This formula is 2% phosphorus and contains the insect growth regulator ClariFly, which helps prevent the development of four species of fly larvae to decrease the fly population on cattle and improve performance.Prevents the emergence of horn flies, face flies, house flies, and stable flies from manure of treated cattle. When used as directed, SWEETLIX Kowpoke ClariFly Mineral with RainBloc provides sufficient diflubenzuron insect growth regulator to prevent the emergence of adult horn flies, stable flies, face flies, and house flies from manure of treated cattle. Existing adult flies will not be affected. Start feeding before flies appear and continue use until cold weather marks the end of the fly season. Use SWEETLIX Kowpoke ClariFly Mineral with RainBloc as part of a fly control program aimed at reducing fly populations. House and stable flies can develop in decaying vegetable matter or spilled silage on premises in the cattle's environment. Good sanitation practices, such as cleaning up spilled feed and preventing manure build-up around barns and fences or under feed bunks, will eliminate additional breeding sites for these flies.