Refer to the following directions below for removing mold or stains from the inside of a toilet tank.
- Empty water from the tank by turning off the water supply to the toilet and flushing the toilet.
- Scrub the inside of the tank with a nylon cleaning brush and a 50/50 ratio of water and chlorine. An alternative to chlorine is white vinegar.
- Thoroughly rinse tank and water to remove all residue before using the toilet.
CAUTION: Do not mix chlorine in the vicinity of acid.