So, my love and I are strolling back to the house this evening, and we both notice light emanating from the crawl space vents. Hello?

I crawl under to so what's what, and seems that some rats have moved in without paying rent. One chewed and obviously swung from the light string to give the place a bit o' Holiday Season light and warmth. There seems to be a small town of them in there--hanging insulation batts, rat guano, a general mess. Found a pile of fill where they dug in around the waste piping where it penetrates the foundation stem wall. I'll get after that one with some steel wool embedded in urethane foam.

Anyone have any proven methods 'sides D-con, Dan torching the place and the usual trap line? May have to set up a sniper's nest with a spot light. Dirty rat Bast'rds....