Leave the doors open at night.
Yeah, he's probably lonely. He could have some friends over, listen to some tunes, chew some wires...it'll be fun.
Seriously, that would be annoying.
I have just gone to war with Raticus Von Rat.
There's a colony under my front step. It's concrete, enclosed on the sides, but hollow underneath, which makes an ideal home...if you're a rodent.
I've caught two so far, but I have to be stealthy about it, because my daughter wouldn't be happy to hear that Dad is harming cute little rats.
I'm all about live and let live - but not if they're that close to my castle.