Goo Gone, 28 OZ, Grout Cleaner, Trigger, Penetrating Foam Cleans Ground In Dirt, Grease & Grime, Removes Mold, Mildew & Hard Water Stains Along With Soap Scum, Reveals Clean Grout Lines With No Harsh Chemicals Or Fumes, Safe For Natural Stone, Tile, Granite & Travertine.