These liners work great.
These liners make litterbox maintenance a breeze. I use pine litter, and it never sticks to these liners. We tried the reusable liners, but I don't care for them at all. Paper is easy to keep clean. I have one cat and get way more than a month out of them before they need to be cycled out, and then just slide 'em into a garbage bag, and you're done!
I love all Modkat products because I use one of their litter box; it's fantastic.
I have a Modkat flipster & because I live in an apartment I chose to stay with paper liners for ease of cleaning & disposal. My favorite litter box for sure in terms of function & style. Most of all, my kitty, Camden approves With the right cleaning & litter, the liner never becomes wet. I throw it out very easy.
We like the inner liner AND the cardboard liners. I have to be very careful when lifting the cardboard liner out every week though so it doesn’t break and dirty litter falls out since my cat only pees in one corner which gets soaked.