To be honest - I generally keep them separate and sell them back. When I don't, it's for a purpose (generally in the winter). There's a little old asian man that comes through all our garbages every garbage day to check who hasn't recycled and he collects them and sells them. I figure he does this for money (although he doesn't look down & out) so when it's -40 outside, I make sure to make it worth his while at least
