StoneTech Soap Scum Remover, Cleaner for Natural Stone, 24-Ounce (.710L) Spray Bottle Removes stubborn soap scum, hard water stains, and dirt without scratching Specially designed for use on sealed natural stone, ceramic and glass tile surfaces Cleans and shines with ease, leaving a fresh, clean scent behind Recommended surfaces include: marble, granite, limestone, travertine, slate, ceramic tile, porcelain tile, and glass tile