I've been using these for a couple years. They are amazing, and so much more reasonably priced than the Litter Genie branded refills. They are every bit as high of quality. I'm excited to find you have a website, since I have booted Amazon from my life!

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

  So happy these are available, they are cheaper/longer than the office L.G. refills, and superior in strength to other off brands. I see they've been removed from Amazon, Walmart, and even Ebay; so I'm so happy to have found this site.

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

These are the best! When I bought my litter genie it came with a cartridge that would not even fit into it properly. Luckily I had already ordered a box of these bad boys from FIRIK, popped one of them in and was ready to go in about five seconds. These fit better than the actual LG replacements that are twice as expensive! So happy I found this product!

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