Le Toilette
A shallow litter box is a must. Those designed for cats are far too high for our porcine pals to climb into easily and really aren’t long enough to be useful for an extended time. My favorite litter pan is a container used to drain water heaters, which you can purchase at a hardware store. It comes in two shapes: either round or made to fit in a corner. I prefer the corner style. It is only 2" tall and 19" on both sides with a rounded third side. This box is large enough to service your piggy’s potty habits until he is about four months old. (litter pan: call Plastic Oddities, Inc. at 800-438-5327 and ask for Corner Water Heater Pan #PVP-19)

Another option for a litter pan is a heavy, black plastic mortar-mixing box from your building materials supplier. I’ve seen this type box in several sizes, the smaller being 20" by 26". An under-the-bed plastic, storage box makes an ideal potty pan. If the pan you choose is higher than 3", you will need to cut down one side so the pig can access it easily. Watch your pig. If she is having trouble getting into her litter box, make the side lower.

A swimming pool can also be used as a litter box. My favorite, a rectangular configuration, this pool’s outside measurement is 30" x 45" x 4.5" tall, and the inside measures 21" x 36". It is made of a water-proof vinyl material and edged with foam rubber . If you would like to give one of these dual-purpose pools a try, order from PA Heartland, Ltd. at 610-323-6372, $42.95. It comes in many designer colors!

Another item to use as a litter pan is a Cargo Tray made for SUV’s. It is a black rubber utility tray, 24" by 34" x 3". It will not slip, is a great height and large enough to last your piggy a long time. I found this item at SAM’S, but if you have trouble locating one, try an auto parts dealer.

While we’re on the subject, I’d like to share my very best potty training trick based on years of observation and lots of success. Since pigs tend to urinate while drinking water, place the water dish in such a way that your piggy must step into the litter box in order to drink. You’ll marvel at how wonderfully this technique works. To help your pig along with the poodie part, place some feces in the litter pan — this will illustrate the concept.

I prefer to use newspapers as the litter medium. They are readily available for recycling, cheap and effective. I lay several layers in the litter pan and remove as needed. Granted, you will be changing the papers more often, but I find wood chips to be very messy. If you prefer wood chips, use pine and not cedar. Cat litter is not meant for pigs…they like to eat it, those silly guys.

A combination of indoor and outdoor potty training is a good idea. My experience indicates that these piggies don’t mind urinating indoors in a litterbox, but would much prefer to defecate outdoors. So with the goal that one day your pig will be totally an outdoor eliminator, choose a spot in the yard that you want the pig to use. If your yard is not fenced, an outdoor potty ring can easily be made with a piece of hardware cloth, 2-1/2 feet high. A good length is 14 feet. Simply make a circle with this wire mesh, and using a few twist ties, connect the ends. Welded wire fencing can also be used, or put together a few portable composting kits and you have a suitable, temporary enclosure for a small pig. This defined area is especially useful when training very young pigs that are easily picked up or those with little or no lead training. If you want to secure this temporary cage, cut the corners off some coat hangers and stick them in the ground, catching the bottom of the hardware cloth every two feet or so. At a pet supply store,you can purchase a traditional, portable, wire dog enclosure to use during this early training phase. This accessory will come in handy for later road trips — a good investment in my opinion.

You must stay with your piggy during this outdoor training for two reasons: 1) to praise his accomplishments: "good pee" and "good pooh"; and 2) to make certain he doesn’t find a way out of the yard or the enclosure.

Back to the Indoors: How you set up your pig’s room will depend a lot upon where existing appliances/furniture, etc. are placed. The main thing to remember is that the potty area should be well away from the feeding and sleeping areas and that the sleeping space should not be drafty.
http://www.potbellypigofmyheart.com/care_&_training.htm

Here is a great web link about nothing but litter box training pot bellies.
http://www.pigpalssanctuary.com/faqs/potty_training.htm

I hope this helps. I have always wanted a pot belly. My husband refuses. Good Luck!!