and The water dispenser filter is and cotton , which is and reusable. The water dispenser filter hair and residues, removes odors, softens the water, and is easy to disassemble and . It is essential accessory for pet water dispensers. Own it and provide a environment for the pets you love. It is recommended to replace it every two months to keep the water for and . It depends on the number of pets using the fountain. Allowing more pets to use the fountain will increase the saliva and debris in the water, so needs to be replaced more frequently.