Replacement filters for the Petkit Eversweet Max water fountain. The package contains 5 filters that are suitable for the PetKit Eversweet Max fountain. The product consists of a cotton layer that captures impurities such as hair, while activated charcoal effectively removes chlorine and odors. Rinse the filter thoroughly before use. For optimal performance, you should replace the filter every 2-4 weeks. Manufacturer: Petkit, Purpose: Petkit Eversweet Max, Number of pieces per package: 5.