Re: How far back can they go?
Was the question about misdemeanors/arrests asked on the application and without a time limit. If so, you should have answered the question truthfully. If they happen to do a background check & develop it, cos. sometimes deny employment because of lying on the application where if the truth was told, they would have hired you especially if the misdemeanor was some time ago. It's hard to say exactly how far back they will go on a background check.
Too often we underestimate the power of a touch, a smile, a kind word, a listening ear, an honest compliment, or the smallest act of caring, all of which have the potential to turn a life around.