8PCS Cat Water Fountain Filter Replacement for Petlibro - Pre-Filter Sponges Compatible with PLWF105, PLWF115, PLWF005 - Keep Your Pet Libro Fountain Clean and Fresh with PET Standard FiltersKeep your pet's water fresh and clean with standwme Water Fountain Filters specially designed for the Dockstream Cat Water Fountain. These filters provide multi layer filtration to effectively remove impurities and ensure your pet has access to better tasting water. The standwme Water Fountain Filter for Petlibro features activated carbon, ion exchange resin, non woven fabric, and a built in pump sponge for superior filtration performance. Your furry