PETKITUpgraded Filter Units 3.0 for PETKIT Pet Water Fountains Eversweet 2S/3/3 Pro,Eversweet Solo/Solo2/Solo SE & CYBERTAIL, Replacement Filters (5 pcs)

Great and easy to clean

Great product my dogs love to drink out if they're fountain keeps it nice and clean

These are more expensive than the multitude of off-brand filters but they last quite a while. I feel more comfortable buying these for the safety of my pets.

The filters are easy to use and replace but they do not last for very long.

Yes! I have been using these even though I’m not entirely convinced they work. Nevertheless I kept using them just in case they actually do serve a good purpose. One month I ran out before my delivery so I ran the fountain without a filter for a week. At the end of the week, I took apart the fountain to wash it and found it full of slimy water. It was disgusting. I never had that before or after when I use the filters. So they work!!

Easy to use good quality

These PETKIT filters do a great job keeping my pet fountain clean and fresh, which means my cats are less likely to give me that "you're failing us" look. They’re easy to replace, and I’ve noticed less gunk and weird buildup in the fountain since using them. If you have a PETKIT water fountain, these are a must-have—unless you enjoy being side-eyed by a cat who thinks they deserve bottled spring water.

So these are great filters for water fountains for your pets. The only issues thay arise is that they can get filthy rather quickly and require changing very often, which results in buying them a bit more often.