Dissolves Tough Tile & Grout Stains Fast!Simply spray stubborn build-up away! Deep cleaning foaming action gets rid of dirt, grime, mineral deposits, mold & mildew! Non abrasive cleaner clings to vertical surfaces, so you can just rinse & clean dirt away. Works on sealed/unsealed grout, fiberglass, porcelain & ceramic. 20 oz. Set of 2.