Kim, I have the same Midwest cage. I love everything about it, *except* that darn channel at the bottom that collects everything. I could fit only one large litter pan, that left the other corner open, which my ferrets delighted in using as the potty spot whenever the mood struck, even if I placed blankies there. I recently bought a *secondnature* dog litter pan. It is miniature size, 20" X 24" X 5". It covers the entire side of the cage they use. It has a lower front entry, so they can just back in on the fly. It won't fit through the door, just lift the cage from the tray and slide it in place inside the wire. I use paper instead of litter as that seems to work better for me, but it is deep enough for litter. I found my pan at PetCo, probably other places would have it. There are smaller/larger sizes available. Ardith [Posted in FML issue 4687]