A two-pack system for the preparation of peracid compositions for the disinfection, cleaning, and protection of cow's teats before and after milking. A first component of the product comprises an aqueous equilibrated solution of a lower aliphatic peracid and a second component comprises an aqueous solution containing an emollient, food grade fragrance, food grade dye, food grade thickening agent, and alkali buffer. The two packs can be mixed to produce a consistent solution of known quality for reducing disease on cow's teats that is nonirritant, has low odor and/or contains a food grade fragrance and may be colored, thickened, pH buffered, and is effective for at least 24 hours after mixing.