Each filter is composed of a cotton layer, activated carbon, and an ion exchange resin. It can effectively remove hair, heavy metals, and bacteria to improve the taste of the water so that pets can drink clean and fresh water all day.

To prevent the activated carbon dust (which will not harm your pets) from shedding into water, please soak the filter in water for 15 minutes or rinse it for 30 seconds thoroughly under running water before use. According to your pet's drinking frequency and the number of pets using the fountain, change the filter every 2 weeks.

Specifications: Name: Cat Water Fountain Filter Inside Material: Activated Carbon, Resinize: Outer Diameter: 127mm/5in, Inner Diameter: 38mm/1.5in, Thickness: 8mm/0.31in