Use in spray bottle applications. May be used on tubs, sinks, shower stalls, toilet bowls, urinals and other hard, nonporous surfaces on which acid can be safely used. Gentle on surfaces and extremely effective on soils. Easily dissolves soap scum. 8 oz./gal. (1:16) makes 5.6 end0use gallons, which is equivalent to: 22 quarts. Each 4x1 case makes 90 end-use quarts.