Official Cat Water Fountain Filters Replacement & Pre-Filter Sponges for 3.2L/108oz Automatic Pet Fountain Dog Water Fountain (12 Carbon Filter and 12 sponges)

They fit perfectly into the fountain. I also noticed when I change them that they are catching things my cats manage to drag into the water, helping keep the water quality good. Super easy to change out.

Perfect for our cat water fountain! Works well! Arrived on time!!

great item - work as advertised

The instructions are in broken english, but it's easy to figure out how everything goes together. The capacity is prodigious; good for summer when animals will start consuming vast amounts of water. I could not hear any noise being produced by the motor, even with my ear a few inches away from it. The stainless steel is an invaluable material for its antibacterial properties.The motor requires so little power it can be driven by a usb cord attached to a wall adapter. Consequently, water pressure is just enough to cycle the water through the spout. Care should be taken to minimize the chances of debris falling into the tray, just as with a regular water dish. The opening for water to drain from is narrow and will stop debris from getting to the motor housing but may clog and cause the tray to overflow.If only one small adult animal is drinking from this fountain, refills will be infrequent. Refills will increase with temperature, size of the animal, lack of water in the air, number of animals, and spills. However, the capacity is more than adequate for a week or more between refills and cleanings.Stagnant water is a great health hazard due to the sheer number of micro-organisms infesting it. Therefore, the constantly moving water coupled with the stainless steel construction allows for much safer drinking water. This should also greatly improve taste, which will hopefully motivate an animal to drink as much water as they need throughout the day.Overall, dealing with a standard dish or bowl is a trial. Dishes are frequently upset, infested with micro-organisms, full of debris floating on top of the water, sometimes too deep for an animal to properly drink from, must be refilled frequently even barring spills, cumbersome, and inconvenient.This fountain solves all of these problems at once. While winter will persist for some time temperatures will rise once again very shortly. This fountain will ensure adequate hydration for any pet(s) that you may own.

So far so good. Runs very quietly and is very easy to clean. I got this one because of warranty. A different brand of fountain died right after first month and just after Amazon return policy expired. Filters need to be replaced fairly often, but worth the cost for my cats ‘ health. Hopefully it will last.

These filters do the job for my pet fountain. I’ve noticed some last a little longer than others, but overall they keep the water clean between regular fountain cleanings. Easy to swap out and definitely worth having on hand.

Work well and keeps my cat happy

I like this set up. Had another one but did not care for it. Was to much to clean