Rejuvenate, whiten & brighten tile & grout with this reliable bleach-based product. Effectively removes tough mildew stains & soap scum. Easy to use: just apply to surface, wait for stains to disappear, then wipe & rinse. Safe for use on most washroom surfaces. Application: Tub / Tile / Shower / Grout Cleaner; Applicable Material: Ceramic; Fiberglass; Grout; Metal; Plastic; Stone; Chemical Compound: Sodium Hydroxide; Sodium Hypochlorite; Dirt Types: Dirt; Grease; Mildew; Mineral Scale; Mold; Oil; Soap Scum.