Powers through soap scum! 100% tough. Soap scum. Hard water buildup. Grease & grime. Calcium & lime stains. Kaboom Shower, Tub & Tile Cleaner breaks through soap scum and hard water buildup without releasing unpleasant fumes. Removes: Soap scum, dirt, hard water buildup, calcium, lime, grease and grime. Use On: Bathroom countertops, tubs, shower tile, bathroom and shower fixtures and sinks. Do not use on frosted glass, aluminum or galvanized metal, natural marble or stone, Mexican or Terra Cotta tiles, reglazed surfaces, fabrics and carpet. Always follow manufacturer's recommendations for item on which you use Kaboom.