These fit Litter Locker Fashion only
These are hexagonal and will only fit Litter Locker Fashion aka Litter Locker 1.
This is the cheapest place you will find them. Although they won't stay in stock long.
There are no generic, Non branded ones available for the LL Fashion. Trust me I've searched everywhere. There's a couple of online places that have them sometimes, but they are very overpriced.
The plastic is thick. You cut off how much you need. It lasts a long time if used correctly.