Remove mold and mildew stains without bleach or heavy acids with a safer alternative. Normal use eliminates and whitens the most difficult stains, including stains caused by coffee, tea, body oils, and more. Can be used on tile, grout, tubs, showers, sinks, and countertops. Ready-to-use. Will not bleach or stain carpets. Safe on natural stone and other surfaces not harmed by water.