PETKITTrash Bag Refill Rings for Purobot Ultra Auto-Packing Self-Cleaning Cat Litter Box, Leak-Proof Replacement Waste Bags, Long-Lasting Trash Bags -4 Packs

Easy to use in the PetKit ultra automatic litter box. Just drop the ring in the hopper and cover with the ring rim and close the trunk lid.

First the great stuff, these bags seal well with the purabot ultra and they don't rip or tear easily. I've been using these for about 3 weeks now and still haven't gone through a ring yet. My only complaint with these bags is that once they are out of the machine they begin to smell. Not a huge deal as I can just throw them out to the dumpster immediately but if you have to store them in your regular trash can overnight your kitchen will smell like used cat litter. I feel like if they were just a bit thicker that would help the problem a lot.

Rings weren’t working. Called support and was told I was sent the Chinese version of these bags and I have no way of changing out my cat’s litter box at the moment.