This cleaner from Earth Friendly Products prevents hard water stains and eliminates soap scum from forming on shower and bath tub surfaces. Works on glass, tub, tile and fixtures. Made from tea tree oil, lavender oil, purified water, a plant derived surfactant, and corn ethanol. 22 ounce bottle. Case of 12. Eco categories: Biodegradable, less toxic, animal friendly, agriculturally based.