We got a 18 month lhasa apso 3 weeks ago and at first we put him in the kitchen when we were out but he tore the draft excluders off the doors, weed and pooed everywhere including on the kitchen table, so I decided to cage him and he seems to be much better in there but in the day if I leave him he dirty's even if i've just taken him out for a walk and he's done his busines while out.
He also doesn't seem to have a clue when you ask him to sit - even though I know he can do it because he has done. He seems just about as obedient as my two toddlers.