^ Oh, and having grown up with 3 sibs who inevitably soil their beds/couches/etc when they have seizures.... cleaning up dog pee/poop is a LOT easier.
One thing I forgot to say... er... even though my Jacks never had an accident until he was about 12 months old (I remember it vividly - it was Christmas, I was decorating, and suddenly heard a waterfall behind me).... I went by the "2 month" thingy as far as gauging how much I trusted him around the house. If he went 2 months without an accident, then I eased up about letting him wander out of sight in the house. But even then going by our previous dogs, he still was being rushed outside at every signal until he was 7 months old or so.
With Bertie... we are doing the same exact thing. His potty signal is going and sitting in the middle of the room and looking at me. Given a choice, I probably would bump it up to training him to ring bells, but I'll use whatever he offers at this point and ask questions later.
He hasn't had an accident in a couple weeks. I won't regard him as potty trained until he's much older. Especially since he still has to go potty QUITE OFTEN.
I have to share too... I was chatting with a coworker about a yorkie he had rescued from his mother in law. This coworker is the "housekeeper" of the family, not his wife. So he ESPECIALLY was upset about his carpets being DESTROYED by the dog having accidents in the home.
Of course I was sitting there thinking about how a yorkie would probably DROWN in golden retriever puppy accident. o_O
To that guy my only advice was patience, consistency, and sticking to a very strict schedule with the entire family marching in step. If just one person is doing all the potty training, that ups the likelihood of accidents happening in the house. Etc....