Hy-Cal 15 is a blend of calcium carbonate and hydrated lime. Its use is in the control of odour and maintenance of sanitary conditions in livestock buildings such as cubicle houses, calving pens and lambing boxes, feed lots, piggeries and stables. The blend of high calcium limestone and hydrated lime will aid in the prevention of the growth of pathogenic bacteria and environmental mastitis whilst raising the PH value of farm effluents.