Save Money on Your Water Bill - Use the Toilet Tank BankThe toilet tank bank is a great way to use less water and reduce your water bill. Just fill the tank bank, and leave it. It's a one time deal, and you're not going to have to think about it again (except when you notice your water bill is lower). The toilet tank bank is a must have for anyone with multiple bathrooms. Why let money go down the drain with every flush? Water ConservationThe toilet bank is an easy device to use for water conservation. Just fill the toilet tank bank to the top, snap closed and hang in your toilet tank. Because it takes up the space of the water, your toilet works just as it would normally. The toilet tank bank keeps your toilet tank full so it doesn't have to refill with new water. Saves Water with Every FlushIt saves water with every flush, up to .8 gallons a flush. It’s made of non-corrosive materials which resist microbes and fungal growth. Never Needs RefillingThe airlock means that the bag never needs refilling.