Soap Scum Bathroom Cleaner Made in USA Powerful formula works quickly and effectively to foam away and dissolve tough soap scum and hard water stains caused by calcium, magnesium and other minerals. Regular use will prevent mineral stain build-up. Soap Scum Bathroom Cleaner provides an invisible shield to guard against soap scum and dirt build-up and for easy cleanup. Cleans porcelain, fiberglass, ceramic, formica, enamel & synthetic marble. 24 fl.oz.