LitterMaid Receptacles, 18-Pack
Product is as advertised, but no charcoal filters which would have been nice to have but here is an important flash for you,,,stay away from Littermaid products unless you don't mind wasting your money!

Great item, better then the stock ones...
This product is much better then the ones that the littermaid came with. They fit allot better then the original, they seal better, and are easier to install.

litter maid
So sad that this is your only option if you have a littermaid. They are very expensive and are supposed to be used once. I can usually use mine a couple of times before I have to throw it out. Just spray lysol into it between uses.

Littermaid cat box liners
We have used, or rather our cat has used, the Littermaid automatic litter box for several years now. It has proven reliable, easy to clean and maintain. Kitty has not had any problems using it either. In my opinion the replaceable plastic bins beat the heck out of flimsy plastic bag box liners, making the task of cleaning the litter box as clean and easy as possible under the circumstances. I recommend buying the 18-count refill trays as this is more economical and last longer. Kitty gets about one week of use out of each tray.

Best to buy the brand name
In the past, I have purchased the off-brand receptacles for the Littermaid cat litter box and have found them to be difficult to use because of their flimsy construction. My most recent purchase through Amazon was of the Littermaid brand receptacles and, despite the higher price, I think they're a much better value.