I just got two young orphaned puppies today, using this very method. Mom was hit on the highway - they're old enough to be on dry food, thankfully, about 8-9weeks old. They are bigger dogs so it's a crate instead of a box, but having two makes it easier with the crate training. Gave them toys and 'used' blankets (I have three adult dogs, one ten year old, 3 1/2 year old, and a a 2 1/2 year old, I 'hunt' with the younger two) to make it comfortable.
We have had a total of four accidents today (no scolding for it) but they have adjusted extremely well. They're so clueless about everything. There is going to be so much poop in my future between new food and wormer.
wow this reminds me when my dalmatian is still a ppuppy, even at 3-4AM I have to take him out just to pee and even thought im soooo tired and sleepy I still have to exagerate expressing my happiness when he pee/poop outside. lol. puppies really like being praised XD
Calling the dog to the mess and pointing at it does indeed work; perhaps not for all dogs, but for every dog we've ever owned, it worked. How did we know? The second or third time it happened, we merely had to point at it and they did the 'ears down, tail between legs 'oh crap'' business.