The H2O Tornado fountain gives your cat moving water, the kind their instincts tell them to choose. The swirling water stays clear and clean, encouraging them to drink more. • Swirling water design keeps it clear and debris-free • 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 and your cat will always have fresh water.