Return of the possum ... or is it? Dun Dun Duuuun!

I had to call an animal eviction firm again. A smell began to emanate from our basement that was less than pleasant. As the dutiful father, husband, and supposed man of the house, I was required to poke my head around in the ceiling of the basement. My search was for one of 2 thing: a dead animal or a live one. Do not ask me which I preferred because I still don't know. While I didn't find anything living or dead, I did spy something to horrify me. After our last encounter with wild life, I felt I had done a good job making sure the little buggers would stay out. Apparently, the little buggers scoffed at my silly notion of securing the house. There ... in the ceiling ... right where the previous possum had made his home ... there was a brand new, nice and comfy, bedded with leaves and insulation, nest. WTF!!!!!!!!! How the hell did he get in this time? I think I need to step up my prevention efforts now.
The good news is that it does appear the nest had been unused for some time (much like Dantooine). I may have hindered their ability to get in the house by blocking a major hole they had dug under the deck. Who knows? The animal eviction guy gave me some pointers on filling in the remaining areas with dirt and rock and monitoring for any activity. *sigh* Looks like I may have to try my hand at concrete work again.