The all new Guard Dog Valve prevents leaks in tank-filled toilets, saving you money, and helping stop the waste of water! In the U.S. alone, we waste over 1 TRILLION gallons of water per year. With nearly 30% of the water flowing into your home going down the toilet, there's a lot of water that can be saved. This not only saves you money based on the water coming in, but also the sewage tax coming out! Throw in a Tiered pricing structure from your utility company, and it becomes pretty clear how one can save 10-20% on their water bill! These savings grow the longer you have Guard Dog Valves installed in your home. A leaking toilet can waste about 200 gallons every day, and due to sediment buildup, material degradation, leaks are bound to occur during the lifetime of a toilet. Don't wait to protect your wallet.