Asian marmorated, eh? Your observations align with mine. Apparently they eat some crops. In the winter I guess they hibernate and don't eat then, but they definitely do lay eggs, when you are checking out your wiring and fuse boxes look for what looks like, uh ground coffee, those are they baby bugs. Although at this time of year I don't know if you'd find them. last year it took me months, literally months to get rid of the babies as the came out of a window casing every few day and I would have to "nuke" them. (i was heavy-handed on the bug spray)

Good luck, it sounds like your infestation isn't quite so bad. Yet.