used a trap, got one. still another one in the attic. I put the trap in the attic again, but that one won't go into the trap. It is smart. then i called pest control company. a guy came, found a hole on the roof. he put a one way door on the roof. 4-5 days past, still hearing noises in the attic. called the guy again, he took the one way door off, fixed the hole on the roof, and put poison in the attic. 3 weeks past, still hearing noises. called the company, no reply yet. don't know what to do next. by the way, mine is a townhouse, may be a more complicated case.