Perfect Match : Cat Water Fountain Replacement Filters for PWF-001, ASIN: B0D221BJGD
4 Pack Replacement Filters : 4-Pack of pet fountain replacement filters.
Keep Your Pet Healthy : Each filter is composed of activated carbon, ion exchange resin and non-woven fabric. They can filter hair, heavy metals, and improve the taste of the water so that pets can drink clean and fresh water all day.
Tips : Please soak the filter in water for 4 minutes and rinse it thoroughly under running water before use.
Recommendations : According to your pet's drinking frequency and the number of pets using the fountain, change the filter every 2-3 weeks.