DuPont Stonetech Mold & Mildew Stain Remover - 24oz Spray Bottle Ready-to-use specialty cleaner that removes unsightly mold and mildew stains from natural stone surfaces Unique formula won't degrade stone or grout Interior and exterior usability in bathrooms, showers, countertops, backsplashes, floors, and walls Safe spray leaves behind a fresh, clean scent Recommended surfaces include: marble, granite, limestone, travertine, slate, ceramic tile, porcelain tile, and glass tile