IFA's ICBM Mag Force Mineral is designed to provide cattle with essential minerals and vitamins, including extra magnesium, when grazing lush, rapidly growing pastures in spring & early summer, or under other conditions where grass tetany (hypomagnesaemia) may be a danger. Adequate consumption of this product is essential for grass tetany protection. It is recommended that there be at least 1 mineral feeder for every 20 head of cattle with mineral feeders well distributed through the grazing area to ensure that all cattle have ready access to the product and that the product be kept fresh and protected from weather.