Litter Training Litter train piggies?

I don't think you can actually train a gp. Mine happen to be trained by accident. When I adopted my girls, they were in a store cage for about 3 weeks (gasp). I used shavings for bedding.

Then I build them a c&c cage with a kitchen. Their kitchen has shavings and the rest is fleeece. Well, to this day, they pee in the kitchen only.

So you might want to try the shavings now. Then when you put them in their bigger cage, use shavings in the kitchen only.