This ready-to-use toilet bowl cleaner quickly removes rust, mineral deposits, and lime as well as soap scum, body oils, and grease. Formulated with 20% phosphoric acid for tough soils and hard water tolerance. Application: Toilet & Urinal Cleaner; Applicable Material: Ceramic; Fiberglass; Plastic; Porcelain; Chemical Compound: Phosphoric Acid; Dirt Types: Grime; Lime; Mineral Scale; Organic Matter; Rust; Soil; Stains.