Even if your toilet looks clean, it can be full of germs you can"t see. Clorox automatic toilet bowl cleaner delivers clorox bleach to your toilet bowl with every flush, working continuously to kill 99.9% of common household germs bacteria in toilet bowl water after each flush. Clorox automatic toilet bowl cleaner also repels tough hard water, mineral and lime scale stains to keep your toilet clean and fresh in between regular cleanings.