General description This 6 Pack Replacement Carbon Filters for Avalon and Pagoda Ceramic Water Bowls is designed to keep your pet's drinking water fresh and clean. The filters are compatible with various pet water fountains, ensuring optimal performance and hygiene. Technical specifications Includes: 6 packs of replacement carbon filters Includes: 6 packs of foam pre-filters Filtration: Three layers (cotton and activated carbon) Compatibility and accessories Compatible with 1/2 gallon, 1 gallon, 2 gallon, Butterfly, Avalon, Pagoda, Seascape, Sedona, Seaside, and Creekside pet water fountains Installation Soak the filter in water for 5 minutes before use Rinse thoroughly with running water Usage Replace the filter every 4 weeks in summer and every 4-6 weeks in winter For multiple pets, more frequent changes may be necessary