It's not the catching part that is, as I have caught 16 out of one house. I think I have all of them caught now to just figure out where they are getting in. I did this job back in the summer and the guy paid for an exclusion. I went around the entire house and sealed up everything I could find. After about 6 months he calls me back and says he has caught 2 in his basement. So being I gave the home owner a warranty I go back free of charge and start trapping them out again. I got 6 this time. After looking over the house again I did find a couple of spots that I missed the first time around. So I sealed those up and hopefully I have this problem solved this time. It's amazing at how small a hole those little suckers can get into. Just a little venting here guys.