PetSafe Drinkwell Replacement Carbon Filters - 4-Pack

My cat is using this fountain, which is especially useful because the vet has switched her to dry food. The fountain is also easier to take apart and clean than one I tried years ago with another cat. The replacement parts we ordered (filters) arrived pretty quickly. We don't need the charcoal filters because we have reverse osmosis for our drinking water, but I'm sure they're useful in many households. And on top of everything, the fountain is nice to look at. I recommend it.

These carbon filters are perfect for the cat's Drinkwell fountain. I clean the fountain, run water through the filter, and replace water every few days. Filter lasts 1 month.

I change the filter on my cat's water fountain every month so I go through filters regularly. It's a great convenience to just stock up on them from Walmart instead of going to the pet store.

My cat, Topaz, loves her ceramic fountain. It's easy to clean and the carbon filters keep it clean and healthy for her.

For our water fountain for our cats, we bought them at a good discount price. They were delivered a few days after ordering.

With 2 dogs with short noses, I am thankful for these filters as they keep the water so clean!

Great filters. Super easy to replace. Exactly what I needed and expected.

The filters seem to perform well for the first 4/5 days. Then I start noticing mineral build up around the top edges of the fountain. I really wish these lasted more than two weeks, since they are made of nonrecyclable plastic. Or if the manufacturer could switch out the casing to a recycling friendly plastic that would be great.

The recommendations for this product specifically say to clean out the fountain and change the filters every two weeks. However I have found that these filters are only good for about a week. Also since these items are only useful for 1-2 weeks, it would be better if they were made from a bioplastic that is compostable rather than the unrecyclable plastic that they are currently made of.

The fountain feels slimy after 4 or 5 days. Regardless of how often I clean it my kitty rarely drinks from it even directly after its cleaned but prefers running tap water.