I live in Prince George BC and have been finding these stink bugs on my covered deck. Never seen them before this summer. Don't know anything about them or where they come from however I did bring back about 80 nursery plants and hanging baskets from the South Surrey area this past June....could they have hitched a ride? Are they harmless? I just vacuum them up and with the colder temperatures now they seem fewer in number....almost gone. Cheers Anita