Thanks for everyones response. I went to
http://www.unexco.com/cgi-bin/wwwboard/wwwboard.html and posted my
problem and followed their recommendation. I used the light in the
basement to be an indicator when there was activity. I then went
outside and stood away from the house looking for activity. I found
where they were crawling pretty quickly. (Luckily I picked the correct
side of the house the first time.)

I have siding and was hoping it wouldn't be in the wall. Unfortunately
is was so I'm going to leave this for a professional.

Alan