Use Activated Carbon: This replacement cat fountain filter contains activated carbon, which can help remove chlorine, odors and pollutants, and filter dirt effectively. High quality: a pack of 12 filters, made of high quality activated carbon cotton; diameter: 12.8 cm, compatible with 1.6 liter flower pots. More efficient: the filter can help remove impurities, thus providing fresh water for the cat. By using this filter, you can encourage your dogs and cats to drink more water and promote the health and hygiene of your pets. Easy to use: The filter is easy to install, disassemble and replace. We recommend replacing the filter every two weeks to keep the water clean Reminder: Please confirm the filter size is suitable for your fountain before purchasing; and clean the filter thoroughly with water before use.Product DescriptionFilterWhy Choose Our Cat Water Dispenser Filter1. Triple Filtration Process: Each pet fountain filter is made of a layer of cotton, activated carbon and ion exchange resin, which is healthier than others, with only two filter materials. The triple action filters fur and residue, absorbs odors and softens water.2. Better purification performance: Compared with most pet fountain filters on the market, RBAYSALE cat water dispenser filter contains more activated carbon, which achieves better purification performance.3 . Keep Pets Healthy: Cat fountain filters can filter hair and residue, absorb peculiar odors and soften water, improve water taste and keep water fresh, helping you encourage pets old people to drink and stay healthy.filterfilterNottabene:Please rinse the filter with water before use.We recommend changing it every 2-3 weeks to maintain the freshness of the water.Use the fountain to change several animals more frequently.