Designed for high trace mineral bioavailability, Purina Wind and Rain ProCycle is an elite, cutting-edge mineral with proven consistent consumption designed to get cows bred, keep them bred and deliver to your bottom-line. This mineral offers ultimate trace mineral absorption through a cutting-edge combination of organic and inorganic sources, which supports elite reproductive expectations. ProCycle includes everything you love about Purina Wind and Rain Mineral, like proven consumption, plus next generation technology to deliver on the highest performance expectations. Contains Altosid IGR fly control.