<p>Haven’t read whole thread; sorry if this has been mentioned.</p>
<p>Germans love to wash their windows. And criticize those who don’t. I had a hard time at first, trying various cleansers and methods. After complaining to a German friend that I was having trouble, she said that most Germans only use water. Wet the window with a wet washcloth, and dry with a microfiber cloth. Clean, no streaks, easy peasy! Can even do it when the sun is shining.</p>