Pet Fountain Foam Pre-Filters: You will receive 30 pieces of pet fountain replacement foam filters, which can meet your pet's daily replacement needs and give your pets a better quality of life. Keep Pets Healthy: The foam filter can prevent hair, food debris and other dirt from circulating around the fountain, keeping the drinking water clean and fresh. Protect the Pump: The foam filter helps extend the life of the fountain pump by capturing hair and debris before they reach the pump. Wide Range of Use: Suitable for PetSafe Drinkwell 1/2 Gallon, 2 Gallon, 7 Gallon, Butterfly, Avalon, Pagoda, Seascape, Stainless Steel Multi-Pet, Sedona, Seaside and Creekside. Features: The foam filter can filter the water that holds dirt and maintain the flow of the fountain to protect the health of your pets. Enough foam pet filters can meet many replacement needs for those who have many pets and are easy to install and replace. Easily removable for cleaning the pump and replacing the foam filter. We