Magic Window Cleaner- 1Tbsp. Jet Dry, 3Tbsp. Dawn 2 cups water. Mix and place in a spray bottle. Wet your windows, and spray. Scrub with a sponge, and rinse with cold water. No need to dry! Sounds great for the outside windows.
Cornstarch cleaning trick: Cornstarch “I add a teaspoon of cornstarch to a cup of white vinegar and a cup of water (my standard window cleaning solution) and the results are incredible,” says Melissa Maker. “The glass becomes so shiny and crystal clear. The cornstarch is the magic ingredient—it’s a very fine natural abrasive that helps work away grime and leave behind a streak-free shine.”