Works in cold water. One product for many uses. 1 oz./gal. (1:128) makes 42.5 end-use gallons, which is equivalent to: 21.25, 2-gallon mop buckets. Each 4x1 case makes 170 end-use gallons. 4 oz./gal. (1:32) makes 11 end-use gallons, which is equivalent to: 44 quarts. Each 4x1 case makes 176 end-use quarts.