Viva la Refills! Give your playing pal an unlimited supply of fresh, filtered water with the Drinkwell Everflow Indoor/Outdoor Pet Fountain. When it's used outside, the fountain connects directly to a standard garden hose (make sure your hose is safe to drink from) and automatically refills the reservoir to the level you desire. Carbon and foam filters remove sediment, chlorine, and unnatural taste and odours from the water, and the built-in circulator keeps water from becoming stagnant, increasing your pet's appetite to hydrate.