Clorox Ultra Clean Toilet Tablets kill 99.9% of bacteria & deodorizes your toilet with the power of Clorox bleach. This toilet bowl cleaning tablet, effectively cleans & prevents stains with each flush, eliminating the need to scrub every time. Each tablet delivers a long-lasting bleach clean & is good for up to three months. Simply drop a tablet into your toilet tank to continuously sanitize, deodorize & clean your toilet every time you flush. The dissolvable cleaning tablets help prevent tough stains & removes hard water, mineral deposits & limescale stains. Ideal for use in restaurants, cafeterias, offices, hotels, daycares & other commercial facilities. Keep your toilet bowl sparkling fresh & ultra clean with no mess & 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.