Let a guy put his belongings in my garage & use my address. He's been in & out for a couple years. I've provided lots of financial support; he admits he owes me, signed a paper to that effect (that wasn't notarized). He's called to say he wants to pick up his stuff, but doesn't show. Can I sell his stuff to recoup some of my financial losses? Is there any legal way I can even try to collect the money -it's about $6K? If I need to give him notice of anything, how do I do that if I don't have his current address? Thank you!