General description These pet fountain foam filters are designed to keep your pet healthy by capturing fur, litter, and food debris, ensuring clean and fresh water for your pets. They also protect the pump of your cat water fountain, extending its lifespan and preventing noise caused by debris or hair flowing into the pump. Technical specifications Quantity: 12 pieces Material: Premium sponge Size: 6.5 x 3 x 3 cm (2.56 x 1.18 x 1.18 inches) Compatibility: Designed for 85oz/2.5L automatic water dispensers Usage It is recommended to replace the cat water fountain filters every 2-3 weeks, as the filtered impurities will remain on the sponge and the filters are not reusable.