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🐱 Fresh home, happy cat—upgrade your litter game now!
QUEARN’s 8-pack activated carbon filters are custom-made for Model 4 and 4 Connect cat litter boxes, delivering powerful, pet-safe odor control with biodegradable materials. Each filter lasts about a month, ensuring up to 8 months of fresh, damp-free air in your home with easy, tool-free replacements.






| ASIN | B0C4F3FQN1 |
| ASIN | B0C4F3FQN1 |
| Best Sellers Rank | #9,511 in Pet Supplies ( See Top 100 in Pet Supplies ) #4 in Cat Litter Box Replacement Air Filters |
| Brand Name | QUEARN |
| Capacity | 19.87 g |
| Color | 8 Pcs for LR 4 |
| Customer Reviews | 4.6 4.6 out of 5 stars (726) |
| Date First Available | May 5, 2023 |
| Item Form | Bag |
| Item Type Name | litter robot 4 carbon filter |
| Item model number | QUE01006-Carbon Filters-Robot 4 |
| Manufacturer | QUEARN |
| Manufacturer | QUEARN |
| Manufacturer Warranty Description | 30 days |
| Material Feature | Biodegradable Warning |
| Material Features | Biodegradable |
| Material Type | Activated carbon |
| Number of Items | 1 |
| Package Dimensions | 10.67 x 9.76 x 2.17 inches; 3.21 ounces |
| Recommended Uses For Product | LR 4 |
| Scent | Nothing |
| Unit Count | 8.0 Count |
J**Y
Works great
It fits the litter robot and is cheaper than the manufacturer’s. Works like it’s supposed to considering it’s just a carbon filter.
J**K
Great fit
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
C**S
Litter Robot 4 filters
Great quality and works as good as brand! Perfect size and thickness and easy to install or change! Great value!
N**N
Fits in litter robot 4
Fits great in my litter robot 4 they are thick and effective same as the brand name ones. Wakes a ton of money
D**E
Great buy for the price
These fit my LR4 perfectly, however I don’t feel like they last as long as the OEM version so you have to replace them more frequently.
E**A
Worth the price!
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.
C**N
Good replacement for Whiskers Litter Robot.
Good replacement product for my Whiskers Litter Robot. Seems to take care of oders.
L**T
Thick replacements compared to original product
These replacement filters fit my Littter Robot 4, but they are much thicker than the originals. Keeping that in mind, I haven't had any issues with them popping out from under the frame, nor causing any issues. I do replace the filter in 2 robots every month, a 12 pack will last me 6 months. Yes - these filters make a big difference in smell and dust so do change them monthly!!
S**H
Fits the litter robot perfectly, and much cheaper than the official product. I think it definitely reduces odors.
C**R
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!
A**R
Significantly thinner than the brand version, so not a direct replacement. I used two at once, which works well, and probably still cheaper overall.
C**O
Works as described
C**B
these filters fit the litter robot 4 perfectly
Trustpilot
4 days ago
2 weeks ago