This spring I am going to clean my windows a little differently. I would never have thought to clean a window with anything other than a window cleaner, until I seen this article.
Rain-X 2-In-1 Glass Cleaner Plus Rain Repellent. There is no need to clean the window before using this product. This product and some paper towels is literally all you need. Spray the Rain-X on the window then wipe off with a towel . Done.