Great litter pan.  I have 2 cats and they both seem to like their own litter pan to go in.  I love the extra large one.  The sides are high enough that it keeps most of the litter in the box.  I have cats that like to kick litter all over the place so this helps keep "most" of the litter in.  I have larger cats so this size is perfect for them.  Another thing I like is that scooping pee and poop is easy in this pan.  Even if you have cats that like to pee in the corner of the pan, this one is so much easier to clean than other pans.