Just a heads up if you do not know about it. There is a new law that is going into effect on Sept 01, 2011. When I was taking in a load last Saturday I noticed a post at the desk when I went to cash out. It was talking about new laws concerning "aluminum coolers" or "aluminum radiators" (I do not remember which). Basically it was saying if you bring these in you have to have one of 4 different pieces of documentation. Two of them had to do with an A/C license. Third was a bill of sale or receipt from the person you got the stuff from. Fourth was a copy of a receipt for the a/c unit you purchased to replace the one you are taking in. I have a stack of clean radiators I was hoarding, but will now take them in since I do not have any of the above documentation. I can understand them trying to do something about theft, but I do not think this was well thougt out.