Maintain your toilet with the help of this Instant Power Toilet Tank Cleaner. It gives your toilet a deep clean by removing the build-up caused by rust lime and calcium. Its Instant Power Toilet Tank Cleaner is designed as a periodic cleaner and when added to a tank its powerful action helps to clear build-up of potentially damaging deposits that can affect the moving parts of a toilet tank. It easily removes calcium and rust deposits from moving parts prolonging the life span of the toilet components. This hassle Free cleaner requires no scrubbing. Simply leave it in the tank overnight and let the cleaner get to work. This water tank cleaner also leaves behind a pleasant fresh scent.