When I was a teen living with mom/dad, we lived in the freakin sticks and had possums come in the house(trailer) up through the floor near the pipes on a pretty regular basis. One night I woke up to hear something rustling around in my headboard, turned on my overhang light and there was a baby possum rummaging around in my stuff. We both freaked. It then ran down my bed, across me and into my closet. I got up, let it hiss at me for a few minutes until he started playing, well um, possum and then picked him up by the tail and put him outside. We never killed 'em because they would eat bugs and were generally harmless.