Potty Training

I am an owner of a three year old jr that is completely potty trained - she has never had an accident in the house. I also have a fully fenced in yard. My problem is my JR will not use my backyard to go to the bathroom. She never has - I have to walk her to go potty. This is normally not a problem, but I do have two other dogs that DO use the backyard to go potty. If I walk one, I end up walking three. I understand that she probably thinks of the backyard as her "DEN" and wants to keep it clean, but how can I re-train her to use the backyard? Do I just not take her for walks anymore, and just hope she goes in the yard? I have tried to tell her to "GO POTTY" when she is running around out there, but nothing -
Any ideas?

• Re: Potty Training Sep 26 (0)