I liked this litter box the best because every ferret I have ever know would only use corners for going potty!! It's smaller so you need to make sure you change it often or more accidents happen.

Pros: Fits in corner

Cons: Doesn't always use.

My ferret is 95% litter trained, and he is good enough to know a litter box from a corner. This product does quite well for the reasonably cheap price.
Only draw back is that it is rather small, and needs to be cleaned out constantly, instead of twice daily as most litter boxes.

Pros: High back

Cons: only fits in corners, small

I'm not sure if they made one bigger now or not but when i was looking for one, i could only find one size. It was great when i had one and two ferrets. But, when I got my third ferret, it had to be cleaned a few times a day or they would end up stepping in their poop. I love how it fits in the corner of the cage giving them more space in the cage and not taking up a whole side of the cage. Even with the big 3 story cage, it was nice having the extra room in the crate for them.

Pros: It's in corners

Cons: Would have like one bigger