XtremeClean™ is a fast acting concentrated high alkaline cleaner & degreaser. It is designed to remove most dirt, grease, grime, soap scum, wax, oil, mildew, algae, porcelain wax, floor finishes & is ideal for areas that have been neglected or subject to heavy use. USE: On all natural stone, grout, ceramic, porcelain, terracotta, Saltillo, quarry tiles, terrazzo, concrete, pavers & masonry surfaces.