That's weird! Anyway, it was a good post!

I would just restrict the amount of area he has to roam... Like say an expen by the door so he can still come inside but has less space. Good luck...

My two are 4 and 2 and are restricted to a bedroom with laminate floors the first half of the day and then my DH comes home to let them out and then they have the second half of the day with access to the whole house. We have found this works for us and we have fewer accidents.

I agree with the others...there is a reason for your Yorkie baby acting like this. Your job is to uncover it and rectify the problem. It could be as simple as him missing you, with you both being gone for so much of each day. If you are currently spending more time with him in the area he is soiling, he could just be 'retreating' to that special shared space trying to stay 'close' to you while you're gone. Leaving that area to go to the potty area while you are away takes him 'away from you' if this is the situation.

As has been mentioned, you could limit his roam area, of course, including puddle pads or whatever in the limited space...which could seem like a punishment to him if you don't spend time with him there if he is just missing you, or you could try spending more time with him near his potty place so he associates that area with you more, or at least put something reminiscent of you near the potty so he wants to be where your scent is...the potty being nearby is then a plus. He may 'not mind' leaving you when you are home, but not want to leave your shared special space when you're gone.

You could wear a garment or use a small blanket...even a small baby receiving blanket...that smells like you and him together...even if you just tie it around your waist in the evenings while you hold him, put it in a plastic bag overnight to preserve as much scent as possible...or sleep on it, then leave it out near his potty area and make sure you spend some time there with him too...hold him, play with him, etc., so he has memories of the shared space and the comforting scent.

My Yorkies will sleep on my jammies and/or robe...which I purposely leave on the bed for them and the kitties to snuggle on, or my pillow or my side of the bed, or on the pillows I lean against or the space I typically sit on in the evenings on the love seat while I am gone from home.

Yorkies love their humans...they get sad and lonely alone, IMHO. We got Mia so Brody would have 'like species' company, but still Brody goes to something of Mommy's for comfort and when he feels even slightly unwell...or even when Daddy's home all day and Mommy is gone, although he enjoys the company of Mia, and Daddy, greatly, too.

Keep a really open mind when you evaluate what your Yorkie is feeling...why he is acting differently between the two situations..you home...you gone. I hope you are able to uncover the reason quickly, and get his little life back on track quickly.