Value Pack & Reliable Support – Includes 8 carbon filters and 8 foam pre-filters (16 pieces total). Dedicated customer service team available for assistance. Perfect Compatibility – Specially designed for Drinkwell 1/2 Gallon, 1 Gallon, 2 Gallon, Avalon, Pagoda, Seascape, Sedona, Seaside, Creekside, and Butterfly pet fountains. Dual Filtration System – Foam pre-filters capture hair and debris, while premium coconut shell carbon removes odors and impurities for cleaner, fresher water. Enhanced with Ion Exchange Resin – Helps reduce heavy metals, soften water, and improve taste—encouraging pets to drink more and supporting urinary tract health. Easy to Use & Replace – Simply soak for 5 minutes and rinse before use. Replace carbon filters every 2–4 weeks and sponge filters monthly for best performance. The part is not sponsored or endorsed by, or affiliated with the brands it fits, including Petsafe Drin-kwe-ll Fountain Avalon, Pagoda, Seascape, Sedona.