Compatible: These filters are compatible with cat water fountains for CHEERBLE, providing a perfect fit and optimal performance to ensure pets enjoy the best drinking experience. Triple Filtration: The pet fountain filter includes activated carbon, ion exchange resin, and non-woven fabric to eliminate odors, remove heavy metals, and soften water. Clean Regularly: Clean the pet drinking fountain pump replacement every one week to extend the pump's service life and maintain water quality. Warm Tips: Rinse the filter thoroughly before use to prevent carbon particles from entering the water, ensuring your pet receives clean and fresh water. Regular Replacement: To maintain effective filtration, replace the filter every 2–4 weeks. For households with multiple pets, consider shortening the replacement cycle. Improved Taste: These filters reduce the taste and odor of chlorine in tap water, making it more appealing to cats. Quantity: 16PCS / 12PCS / 8PCS Color: As shown Material: Non-woven fabric + activated carbon Package Contents: 8 x Pet Water Fountain Filters (only the listed items included; other products not included) Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1–3 cm.