Organic Iodine Salt provides a nutritional source of iodine for cattle. Equivalent to 9.2% EDDI (ethylenediamine dihydroiodide); 40 grains EDDI per oz; 41,760 mg EDDI per lb. Organic Iodine Salt may be mixed with cattle ration or salt. Typical ration is 1 lb Organic Iodine Salt mixed with 260 lbs of salt. Then feed 1 oz of salt mixture per head per day and offer continuously.