Compatible: These filters are compatible with cat water fountains, 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 reduce odors, remove heavy metals, and soften water Clean regularly: Clean the pet drinking fountain and pump replacement every one week to extend the pump's service life and maintain water quality Warm Tips: Please 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: Filters help reduce the taste and odor of chlorine in tap water, making it more appealing to cats Quantity: 12PCS Color: As shown Material: Non-woven fabric + activated carbon Package Contents: 12 * Pet Water Fountain Filters Note: The package includes only the items listed above; other products are not included Note: Light reflection and differences in display screens may cause slight variations in color compared to the actual item. Measurement error allowance is +/- 1–3 cm