The Drinkwell Replacement Foam Pre-Filters trap any large debris and hair in the water, before they reach the pump, providing cleaner water to your pet.
These foam filters help keep the pump cleaner in between cleanings and maintain the fountain's flow rate. These filters are sold in a 2-Pack and are compatible with the Drinkwell Lotus, Stainless Steel 360, Avalon, and Pagoda Fountains.
Posted by Unknown on May 13th 2013
I put in filtered water. I clean the fountain every 4 weeks, and reuse the same filter. The filter is dirty/slimy, and I clean it w/water - will try with vinegar next time. On the second cleaning, I replace the filter. The pump is still going strong since the filter captures the cat hair that falls in the water.