That sounds like a good idea about maybe putting something up in front of the paper so he can't get off, like some kind of barrier, a small bathroom might be the answer, just have paper all over, I heard one time where somebody was housebreaking the pup, and they started out with the paper covering the whole floor of the small room, and as the pup started using the paper, and got better at it, they would remove one block, and then another, and soon the pup was using the paper. Sounds like a good idea. I never tried it but it is worth a try.

Tray