This cleaner is 83% bio-based product designed to clean toilets, urinals, and shower rooms. Contains 8% citric acid, derived from a renewable resource. Citric acid provides efficient cleaning action that quickly removes soap scum, water spots and light rust from toilet bowls, urinals, drinking fountains, showers and similar hard, non-porous bathroom surfaces. Low VOC, dilution 1:10 or RTU for light duty.