Clorox Ultra Clean Toilet Tablets kill 99.9% of bacteria and deodorizes your toilet with the power of Clorox bleach. This toilet bowl cleaning tablet, effectively cleans and prevents stains with each flush, eliminating the need to scrub every time. Each tablet delivers a long-lasting bleach clean and is good for up to three months. Simply drop a tablet into your toilet tank to continuously sanitize, deodorize and clean your toilet every time you flush. The dissolvable cleaning tablets help prevent tough stains and removes hard water, mineral deposits and limescale stains. Ideal for use in restaurants, cafeterias, offices, hotels, daycares and other commercial facilities. Keep your toilet bowl sparkling fresh and ultra clean with no mess and no fuss with the help of Clorox Ultra Clean Toilet Tablets. Application: Bowl Cleaner; Applicable Material: Ceramics; Enamel; Fiberglass; Metal; Plastic; Vinyl; Chemical Compound: 1-bromo-3-chloro-5,5-dimethylhydantoin 51.0%; Dirt Types: Grime; Lime; Mineral Scale; Organic Matter; Rust; Soil; Stains.