CoverClean CT- 50 Tile Grout Cleaner Surface Treatment (12 Oz - Prof Grade) High pH formula to clean off heavy soils, powdered oxygen to lift & remove Rinses easily with water and extra strength Enzyme fortified to attack organic residue, fortified with D-limonene natural solvent Cleans ceramic & porcelain tile & grout, oil and grease stained concrete, natural stone and grout Showers, Locker & Restrooms, Garage floors, Driveways, Mold, Mildew, Wax, Grease, Scum on Tiles