Fall is coming and we have to clean those windows before winter starts. The best product to use to clean windows is vinegar. Yes, vinegar. My mother gave me this trick many years ago. I always use vinegar to wash my windows.
Vinegar is an eco-friendly non-toxic and anti-bacterial. Vinegar is actually beneficial to any cleaning.
When you wash your window using water that contains vinegar, the results will almost always be free from streaks.
How to make the solution:
Mix one part hot water to one part distilled vinegar. Then, clean the window with a sponge, using the solution, Then, dump the squeegee into the mix and clean from the top-down, wiping the edge of the squeegee after every stroke.
This solution also works on granite, tile, stainless steel, glass and stainless.