Here's the doggy litter box I use for Eros
http://www.petsmart.com/global/produ...litter+box&N=2. I use the slightly taller one that is shown empty and just put a pee pee pad in it. The one with the shorter walls probably wouldn't work well for my boy as he likes to pace around and then poop close to the wall, so the higher one keeps him from accidentally pooping outside of his litter box even though he is in it. Good luck!
Desiree & Eros