I've always cleaned mine with Windex and a sheet of newspaper. I clean house and car windows the same way. No streaks with newspaper. -- Jamie in Michigan Currently Reading: The Beach Street Knitting Society and Yarn Club by Gil McNeil Earn cash for answering trivia questions every 3 hours: http://instantcashsweepstakes.com/invitations/ref_link/49497 See everything I've read this year at: www.michiganrxtech.com/books.html