12Pcs Charcoal Water Filter Replacement Fountain Filter Compatible With Pioneer Pet Water Fountain Pet Drinker Bowl Raindrop Plastic Fountain Fung Shui Plastic Fountain

They last a good month at least.

Water was getting a little gross and we didn't have any filters. Great fit for our Yin/Yang fountain.

Works fine in my cats' water fountain.

Good value, keeps water clean

Fits my pet fountain; excellent price

I couldn’t find the size I needed for an older model pet water fountain and these were perfect! Thank you!’

The water filters work for my needs and didn't have to order from a pet store. Most of the time I cannot find the right water filter for my cat's water fountain. I will order the product again from seller, MyfatBOSS

I've used them since I purchased water fountain for my pets.