55. PETPNR Pet Water Dispenser Filter for Cats and Dogs, Water Bowl Filter with Sponge, Replaceable, 19 Sets Replacement Filters, Pet Automatic Water Dispenser, 1 piece → Unopened, Unused ✨Thank you for viewing!✨ Product Description: * * 【Applicable Variations】PETPNR SSPF-B04/SSPF-B21 Stainless Steel Pet Automatic Water Dispenser, PETPNR Cat and Dog Water Bowl Filter. Please make sure you are purchasing PETPNR brand filters. * 【Protecting Pet Health】The filter cartridge uses high-quality coconut shell activated carbon. Uniform pores, fast absorption, and durability. Filters out heavy metals and chlorine. This allows you to always provide fresh water to your pets. * 【Usage Notes】Soak for about 5 minutes before use. Clean the filter sponge once a week, and replace the filter cartridge every 3-4 weeks. The frequency of replacement depends on the number of pets and the frequency of drinking water, so adjust according to the actual situation. * 【Storage Method】Store in a well-packaged state in a well-ventilated place. Do not store in places with humidity of 80% or more, places that come into contact with corrosive gases, or places that become extremely hot. * 【Package Contents】Filter sponge *4, Activated carbon filter cartridge *4. Usually, 4 sets of filter elements can be used for 3-4 months.