MQODLFP 12PCS Pet Wireless Automatic Circulation Smart Drinking Fountain Filter Suitable for Cat Drinking Fountain

Pre-filter sponge: High-density sponge filters debris and pet hair, preventing pump clogging and damage and extending the life of your fountain pump. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Warm Tips: Please immerse the filter in water for 2 minutes and rinse thoroughly before use to prevent carbon particles from seeping into the water and your pet enjoys clean and fresh water. Regular replacement: In order to maintain the filtration effect, it is recommended to replace the filter every 2-4 weeks. If you have multiple pets, consider shortening the replacement cycle.