I still have the half pack I was using when my 510 arrived Sep 11 2009. I keep them in a drawer in the office. I also have several pounds of tobacco and tubes in a big box in the bedroom (with a cover over it and my box fan on top). My wife sold about 10 cartons of store bought cigs that I had. I even saw a pack of cigs in the console of my truck the other day. I had a pack in the Jeep that I gave to a fellow at the market who tried to bum a cig off me.