Just my personal experiance, but when we had the pup, even though she would poo poo on the newspaper, right after I cleaned it up, she would IMMEDIATELY poo poo/wee wee there again. Not enough, she would stand there and bark for us to come.
Only later did I read that for a pup, it is not only a game but also very 'rewarding' to watch their owners clean up. And they will almost immediately leave you another souvenir. Thats why its better to not let them see you clean it up.