Porcelain Pledge 32 oz. Bowl Cleaner removes lime, soap scum, hard water deposits, uric acid salts, and various discolorations from toilet bowls,urinals, and shower stalls, ceramic tiles and sinks. Effective against Salmonella choleraesuis when used undiluted on pre-cleaned hard non-porous environmental surfaces, according to the AOAC Use Dilution Method. Big M Janitorial Supply