Compatibility: Cat Water Fountain filters are compatible with 80oz swan Automatic Pet Fountain Cartridge Filtration Systems: The replacement filter has a multi-layer filtration system.High density cotton canStop hairs and debris;Activated carbon can remove bad taste and odor.Give your pet access to clean, fresh water every day, which will help increase water intake and reduce the risk of urinary tract infections Pump pre-filter sponge: The water pump's high-density pre-filter sponge helps to remove fine particles and filter impurities, preventing fine particles and impurities from entering the pump and helping to extend the life of the pump Healthy and Safe Material: The replacement filters are made of environmentally friendly materials that help ensure water quality and provide healthy and pure water to protect your pet's health Tips for use: Soak the filter in water for 5 minutes before use, then rinse under running water for 15 seconds. This prevents carbon dust from falling into the water, keeping it clean and fresh Regular filter changes: In order to maintain the filtration effect, please replace the filter and sponge once every 2-4 weeks; If you keep more than one pet, the cleaning of the pet fountain and the replacement of the filter need to be increased This Pet Fountain Filter is designed to keep your pet's drinking water clean, healthy and delicious. These filters utilize a multi-layer filtration system. A high-density cotton non-woven layer filters out hair and food, activated carbon removes odors and tastes. These filters are recommended to be changed every 2-4 weeks depending on use. To ensure optimal performance, soak the filter in water for 5 minutes before use and rinse thoroughly. With the Pet Fountain Filter, you can provide your pet with clean, fresh, delicious water. Order now and enjoy a more affordable and powerful product than other brands!