Description PurinaWind & Rain Storm Hi-Mag 4 Complete beef cattle minerals designed to correct mineral deficiencies of the available forage in a highly, palatable, weather-resistant, granular form.Wind and Rain Storm cattle mineralsâ large particle size and special formulation keeps the mineral from absorbing water and blowing out of the feeder.The Storm technology provides the ultimate in weather resistance to reduce waste and makes Wind and Rain Storm Formula more economical to feed than conventional loose minerals.50 lb3000420-106 Feeding Directions: Feed this product free choice to cattle grazing green, fast-growing forage. Feed this product 1 to 2 weeks before cattle are placed on pasture. Optimum intake is 4 ounces per head daily.