All Purpose Mineral w/ Fly Control 50# Bag

All-Purpose Mineral w/ Fly Control IGR and Magnesium 50 lb. Your mineral and fly control are in one bag. Improves cattle average daily gain, reproduction, health, and comfort. Prevents adult horn fly emergence from the manure of treated cattle. A nutritional supplement containing S-Methoprene, Altosid IGR Insect Growth Regulator, for continuous feeding to cattle through the horn fly season.