I can understand why you don't want to put up a fence, but I would be worried about other dogs being able to get to your baby. I've never had experience with an underground fence, but I guess my opinion is, not in favor of them. Yorkies are so small, I'd hate to think of them, or any dog, getting a "shock" while learning where the fence line is.
__________________ ~Paula~ proud mommy of
~Otis  (yorkie) & Oliver  (shih-poo) |