Dear Paul, My understanding and experience is that the bees remember forever. In the summertime I don't move anything back to the old location until about six weeks have elapsed so that all of the adult that were there are gone. Jerry _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com Or call Juno at (800) 654-JUNO [654-5866]