Sonar-Sensing Automatic Pet Fountain

The WaterDog automatic outdoor pet drinking fountain lets your dog help itself to fresh water, so you don't have to worry about stagnant or empty water bowls. WaterDog senses your dog's approach, and automatically dispenses a cool, clean stream of fresh drinking water. Smart sonar sensing technology triggers the WaterDog to turn the water on when your pet comes within 3 feet (1 meter), and turns it off when your pet leaves. You'll never have to worry about what your dog's been drinking again.Installs easily on any outdoor faucet