I have the same problem with my 5 month old yorkie Clyde
! I'm currently crate training him but so far it's not going too well.
I have two Maltese who will litteraly bark and go crazy if they somehow get poop on themselves. Clyde, on the other hand, doesn't mind if he's sitting or sleeping on his urine/poop in his crate.
I have him on a schedule and when I take him outside to potty, he'll sit there and stare at me or find something (leaves, dirt, grass & grasshoper - yuck) to eat or play with. I get frustrated and take him back to the crate only to come back seconds later to find a pool of urine and poop in which he finds quite tasty and decides to make a meal of! So gross!
This poor little guy! I guess I'll just have to be patient and give him awesome treats when he does relieve himself in the right places. Any tips or advise would be great.