That method of training was common way back when. However, this person shouldn't have a dog. If she really wants the dog, paper train him for BM, and then take the paper outside, so the dog will know that's the place to do his business. It requires patience, but it works. Crate the dog (puppies--no more than four hours) overnight and take him out the first think in the morning. I think every dog should have a fenced in yard or area to exercise anyway.
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A dog, I have always said, is prose; a cat is a poem. ~Jean Burden