ORSDACat Water Fountain Filters, Carbon and Resin Filters ONLY for 100oz/3L Automatic Pet Fountain Dog Water Dispenser, 3 Triple Filtration System（12 Pcs）

No complaints, easy to change, just exchange with old filter and dispose.

We used this filter for our cats water fountain. We are changing it weekly. Love it!! Cat loves it too!!

These filters work great for my cat fountain. And they always arrive fast. I wil not use another product.

This is the filter that is used for the Orsda water fountain.

These are vey effective filters and the fountain makes it very easy to swap them out. My only issues is if they weren't already expensive at $19 / 12 them raising prices to $21 / 12 when these need replacing weekly not including having to replace the black filter bi-weekly is really starting to make this ridiculous. Surely the cost for producing these filters isn't that high. The fact that all of these filters are generally different shapes and sizes too means you basically have one decent option to buy too and that's from the manufacturer of the fountain. Would be nice if they at least had a subscribe and save option, if I'm replacing these things regularly at least give me an option to sub at a discounted rate like most other amazon products and save me the time of thinking about needing to reorder these each time.Edit: Support reached out and liked the idea to include a subscription and have reached out to Amazon for approval. So that'll be great. I'm going ahead and bumping this review up to 5 stars. I'll rewrite it as a whole pending seeing when / how the subscription goes. I think it's great that they take customer feedback seriously.

For my cats

These filter are great

Works perfectly with the Orsda Water Fountain.

I use these filters for my ORSDA pet water fountain. They’re super easy to change, I wish they’d last a little longer but otherwise they’re great!

Have two orsda fountains for 4 cats and 1 dog. Drinking water is important for renal health especially if pets are on dry food or have kidney issues such as my Ragdoll has. They all enjoy the fountains and I find the service with supplies and delivery here at Amazon very prompt. Highly recommend!

The sound the water makes as it’s pushed through the filtered pump seems to draw the cats attention so he’s drinking more often.

Good product but the filter's do not last very long.

Seem expensive for what you get. They do keep your pets water clean but there isn't a lot of competition so i guess you pay what they charge.