Perfectly compatible: Our cat water fountain filter is compatible with 3-liter round pet water fountains on the market (filter diameter: 14.6 cm), please check the size carefully before purchasing.

【Triple Filtration Protection】This cat water fountain filter is made of layers of cotton, activated carbon, and ion exchange resin, which can filter hair, debris, and impurities, effectively eliminate odors in cat water, and ensure healthy drinking water for pets.

Change filter regularly: We recommend changing the filter element regularly to keep your cat's water clean. Replace the cat water fountain filter every 1 to 2 weeks in summer and every 2 to 4 weeks in winter, or more frequently if multiple animals use the water fountain.

【Note!】Soak the filter in water for 3 minutes before use and rinse thoroughly under running water to keep the product clean and the water healthy.