This thickened, 9% hydrochloric Betco acid toilet bowl cleaner contains detergents & compounds that quickly remove rust, scale, & hard water mineral deposits. Because it clings to vertical surfaces, it provides more contact time for better cleaning action than thin formulations. Application: Toilets; Urinals; Applicable Material: Hard Surfaces; Toilets; Urinals; Chemical Compound: Hydrochloric Acid; Dirt Types: Mineral Deposits; Rust; Scale; Soils.