Purina Wind and Rain Cattle Mineral with Altosid Insect Growth prevents adult horn fly emergence from manure of treated cattle. By breaking the horn fly life cycle, this mineral supports effective horn fly control where it starts. Managing horn flies is critical because heavy horn fly pressure can cause stress and lead to reduced weight gain and overall poor performance. Consistent horn fly control helps protect herd health and reduce costly production losses. Wind and Rain All Season Beef Cattle Mineral is specifically designed to correct mineral and vitamin deficiencies found in forages. Containing 7.5% phosphorus, essential macro and micro trace minerals, and supplemental vitamins A, D, and E. This carefully balanced formula delivers the essential nutrients cattle need to stay healthy and productive year-round. Our Storm technology provides the ultimate weather resistance to reduce waste. The large particle size and special formulation help keep the mineral from absorbing water and blowing out of the feeder. That makes Wind and Rain Storm Formulas more economical to feed than conventional loose minerals.