Even when your toilet looks clean, it can be full of germs you can't see. Be safe ? clean and deodorize with every flush. Cleaner/disinfectant helps prevent mineral and hard water stains while it kills 99.9% of all common bathroom germs. 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.