Iodine-based detergent sanitizer is designed for washing udders. Contains a wetting agent and a mild acid to kill a wide variety of bacteria and condition water for effective yet thorough cleaning. Gentle on hands and udders, it helps heal cuts and bruises and helps stop spread of "udder pox" from milker to milker. Won't cause chapping if used in recommended dilutions. Use at rate of 1 oz. per 5 gal. water. One gallon of udder wash can last a small herd nearly a year. One gallon.