About the climate, it's still - 10 celcius here. I went to attic just to make sure there really is no electricity. There is a plug right next to the main door but it might be little suspicious if an extension cord went to my cabinet... But, now having spent more time there I realized how cold it is up there. So basement is next. It's further away and most likely visited more often. But supposedly gals don't hermi there, thanks to warmth, and no mystery sound making animal(s).