I also love these replacement cartridges. They work perfectly with the litter genie and are a much better deal. I've never had one break and the odor control is great. They are 21' long as opposed to the name brand which are 14' long and they are cheaper than the name brand. This is a great product and I strongly recommend it to the more expensive alternative.

I was purchasing these on Amazon, but they stopped being available there. The shipping from this site was free and I bought two sets of 4.

FIRIK Litter Genie Refill for Litter Genie Standard & Plus & XL, Large Capacity of 21 Feet, Pack of 4

  Use to buy these all the time on Amazon, but they kept getting removed there. Found this side out via reddit and was happy to see i could still buy. pretty fast shipping and still a great price!

FIRIK Litter Genie Refill for Litter Genie Standard & Plus & XL, Large Capacity of 21 Feet, Pack of 4

  So far, I love these. They are so much better than the litter genie refills. They are stronger and holds odors better! Thank you. The only thing I would change is if you can make them opaque instead of see-through.

FIRIK Litter Genie Refill for Litter Genie Standard & Plus & XL, Large Capacity of 21 Feet, Pack of 4