SSS EarthCare Blue Ocean Organic Acid Bowl Cleaner is a ready-to-use organic acid bowl cleaner, formulated with a patented organic acid, it's more effective than phosphoric acid when removing limestone, hard water deposits, rust, soap scum and urinary salts from hard surfaces. Can be used to clean and deodorize washbasins, bathtubs, shower stalls, drinking fountains, toilet bowls, urinals, and sinks. Its clinging formula controls run-off for effective usage. Contains no phosphates, no VOCs and is non-fuming and non-corrosive to the skin and mild steel. EcoLogo certified.