Thickened formula with 9.25% hydrochloric acid clings to vertical surfaces for a more thorough clean. Quickly removes build-up of rust, lime & uric acid in toilet bowls. Disinfects bacteria & viruses after one minute of contact. Easy to use, just apply & scrub. Application: Bowl Cleaner; Applicable Material: Ceramics; Enamel; Metal; Chemical Compound: Hydrochloric Acid; Dirt Types: Bacteria; Fungus; Germs; Grime; Lime; Mildew; Mineral Scale; Mold; Organic Matter; Rust; Soil; Stains.