Keep your pet’s water fresh and clean with PetSafe Drinkwell Replacement Foam Filters. The foam filters catch pet hair and other debris floating in the water, providing cleaner water for your best friend. The foam filter helps keep the fountain pump cleaner and maintain the fountain’s flow rate. The 2-pack of filters is compatible with the PetSafe Drinkwell 1/2 Gallon, 1 Gallon, 2 Gallon, Butterfly, Avalon, Pagoda, Seascape, Stainless Multi-Pet, Sedona, Seaside and Creekside Pet Fountains. PetSafe brand is here to help you and your pet live happy together.