R-Teez Tile Grout Cleaner

Cleans grout of any surface stain: coffee stains, wax buildup, mildew, dirt buildup, calcium, algae, red clay, and more! Works on sealed or unsealed, sanded or unsanded grout of any color. Can also be used to clean surface stains from driveways, concrete surfaces, floors and toilets from rust, calcium, soot and hard water buildup. DO NOT use directly on the tile.