Streak free windows?

I was a detailer for a long time and my trick for streak free windows is hitting the windows with a Mr.Clean Magic Eraser ,a bottle of 50/50 alcohol,and a microfiber cloth to dry first.The magic eraser cuts and removes the crap that is gassed off from the interior ,or smoke film from a previous owner.Then,again ,use an alcohol based glass cleaner ,or even the alcohol solution and 2 microfiber towels one to wipe,one to dry.I use Sprayway Glass Cleaner.I think I've been using it for years now.You will be amazed how great micro fibers work on windows.Claying them also works great as well .Meguiar's makes very good glass cleaner too. :thumleft: