Smartseal Heavy Duty Tile & Stone Cleaner is a professional heavy duty cleaner that is very effective for cleaning ceramic, porcelain, slate, granite, marble and other natural stone surfaces. It can also be used to remove dirt and grime from polished marble, terracotta and limestone floor tiles. This powerful concentrated cleaning formula will break down and remove the most contaminated areas of dirt and grime. Once clean, use an internal floor sealer such as the solvent based Stone Impregnator.