Comet Bathroom Cleaner Spray Bathroom Cleaner With Disinfectant is a non-abrasive, bleach-free disinfectant that penetrates and dissolves soap scum and hard water film while it cleans.Comet Bathroom Cleaner is great on such surfaces as fiberglass, glazed porcelain, stainless steel, chrome, plastic and vinyl, shower doors, tubs and tile, sinks, and toilets.