On Sun, 21 Jan 2007 13:19:09 -0500, "Bill Stock"
wrote:

I've got some critters in the walls/ceiling. I imagine it's squirrels, as
they're making too much noise for mice. I can here them scratching and
rolling objects around at night.
Don't overlook the possibility of roof rats
http://ag.arizona.edu/urbanipm/rodents/roofrat.pdf