I was also having problems with my ferrets having the run of the house and not using the litter boxes all the time. I decided we needed to do something but I didn't want to confine them to a small cage. I had my husband build an enclosure that is 5'x6'. Its in the corner of the computer room so only needed to make two 3' walls, cut out notches for the base boards. That way it fits tight to the wall. We went and bought a piece of linoleum and layed that on top of the carpet. Now we are all happy once again. They have room to play, we put a tube so they can climb and slide, and of course lots of blankets. Now I have to clean their litter box 2 to 3 times a day. Just thought I would give you our idea on solving this problem. Lanette [Posted in FML issue 3367]