Our cats are “diggers” so the top entry wall has made a huge difference in the amount of litter they kick out. We no longer have a “beach” as we call it on our floor!

It is a definite improvement over the shorter wall. One cat is modest with her digging, the other is a crazy fiend that frantically flings litter everywhere. The new wall prevents most of her attempts to get litter out lol, though with a fresh full box of litter she still manages to get some on the floor. Still, I'd say it's more her persistence then the walls design so I won't fault the wall.

Less litter is kicked out of the box. Much better than the original one.

Wall still falls off on occasion. It does keep more litter in the box.

My cats were kicking a ton of litter out of the box so I got the larger wall. It works great. A lot less litter comes out of the box. It stays in place better than the smaller wall too.