Usage Tips:Compatible: These filters are compatible with cat water fountain For CHEERBLE , fit and perform perfectly. Let pets always get the best drinking experience Triple Filtration: Pet fountain filter contains activated carbon, ion exchange resin and non-woven fabric to eliminate odor, remove heavy metal and soften water Clean regularly: Clean the Pet Drinking Fountain pump replacement every one weeks to extend the service life of the pump and ensure the water quality. Warm Tips: Please rinse the filter thoroughly before using, which can prevent carbon particles from leaching into the water, ensuring your pet enjoys clean and fresh water Regular Replacement: In order to maintain the filtration effect, it is recommended to replace the filter every 2-4 weeks. If you have multiple pets, please consider shortening your replacement cycle Improved Taste: filters reduce the taste and odor of chlorine found in tap water, which can make the water more appealing to cats. Quantity:16PCS/12PCS/8PCS Colour:As Shown Material:non-woven fabric+activated carbon Package Contents: 16 * Pet Water Fountain Filters / 12 * Pet Water Fountain Filters / 8 * Pet Water Fountain Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.