Our toilet tank cleaner contains catalysts and corrosion inhibitors. It eliminates odors and leaves a fresh citrus scent, creating a comfortable bathroom environment for you. Its use is simple: open the lid and pour the right amount of detergent directly into the toilet tank. Wait until the dish soap has taken full effect, and then flush the toilet normally the next day. And it can be safe and effective, without harsh chemicals, and without fear of damaging the toilet.