How old is Mishka?
Personally, I've always believed the key to indoor pad training is teaching the dog WHERE to go, not on WHAT to go. I only have one designated potty area.
ZoE goes on her potty pads in the hallway and it's the only place she goes. I have hardwood floors in every room in my house except the bathroom, so I have alot of throw rugs. I've never had an issue with her using rugs instead of her pads. It doesn't matter if I have disposable pads, washable pads, or even newspaper down...she will always go to the hallway to go potty.
Now admittedly, my home is very small, so ZoE doesn't have far to travel to get to her pads. But even in my last home which was four times the size of my current home and was a two story (plus a finished basement), my last yorkie, Chelsea, knew her potty area was in the laundry room and no matter where she was in the house, she took herself off to the laundry room when she had to go potty.