Package of 4 pieces with highly effective cotton filters containing activated carbon & negative ion resin. Suitable for waterers/fountains 05582-05584-05585. Carbon filters remove odors, residues & hair from the water. For crystal-clear, pristine water without pathogens & organic substances that cause diseases. The water filtration method is ion exchange to maintain the freshness of the water.

Rinse the filter well with water before use. Replace the filter every 4 weeks. If you have multiple pets using the fountain, change the filter more frequently.