Keep your pet’s water fresh and clean with PetSafe® Drinkwell® Premium Replacement Carbon Filters. This premium filter has 6 separate carbon compartments to reduce the settling of carbon and enhance overall filtration. The dual-density polyester pad catches pet hair and debris, and the activated carbon made from coconut shells helps remove bad tastes and odors from the water. This filter is compatible with PetSafe® Outdoor Dog, Everflow, Multi-Tier, Original, Platinum, Zen and Mini Pet Fountains. PetSafe® brand is here to help you and your pet live happy together™.