Mr. Muscle® specializes in easily removing mold & mildew -those slimy black marks on tiles and other moist surfaces that are difficult to get rid of with ordinary cleaning products. Mr. Muscle's quick-action formula immediately attacks mold & mildew at the roots to kill them completely and remove stain build-up easily. Use on glazed or sealed tiles around the home: bathroom, kitchen, walls, and floors, Also good on tubs, rubber/vinyl mats, shower doors, pails, sinks, stainless steel & other glazed surfaces