8 Pack Carbon Filters Compatible with Litter-Robot 4, Cat Litter Box Filters Replacement to Absorb Odors Control Damp from Pets and Keep Home Fresh

I grit this to go with my whisker robot litter 4. Fits perfectly. Keeps smell down. Reminds me to do a good box cleaning. Best litterbox I have ever purchased and these are great to help it run smoothly

Significantly thinner than the brand version, so not a direct replacement. I used two at once, which works well, and probably still cheaper overall.

The QUEARN 8 Pack Carbon Filters are a great, budget-friendly alternative to the more expensive litter robot filters. They fit well and do an excellent job absorbing odors from the cat litter box. If you want quality odor control without breaking the bank, these are a solid choice!

Works great and much more cost effective

I was skeptical in buying these because of the mixed reviews but so far I have not had any issues. At first, I thought it was not helping with the smell but after a day, I noticed that the smell was gone and that it actually was working. The filters are not thick but they do the job, which is why I must say they will need to be replaced more often than the originals. They were easy to install and the size was perfect for our litter robot 4. I would say the quality is obviously not like the original brands but you’re getting a pack of 8, so I’d say it’s worth it.