The H2O fountain gives your cat moving water, the kind their instincts tell them to choose. Better-oxygenated water encourages them to drink more, which is key to better health. • Skimmer aerates the water and keeps it free of drool • Oversized pump with strong flow and filtration, 3-year warranty • BPA-free, with a translucent bowl to check the water level • Comes apart in seconds and is dishwasher safe Change the filter monthly to keep the water fresh.