Did you know using windex leaves wax on windows and mirrors? And overtime that "streak-free shine" becomes impossible to get because of the wax. A better option is to use this Streak-Free Homemade Glass Cleaner instead, great looking windows, no waxy build up. Plus it's all-natural, super easy to make, and a third of the cost.
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.
Fill the spray bottle 3/4 full with rubbing alcohol. Add two small drops of dish soap. Fill the bottle the rest of the way up with tap water. If you have really hard water you might want to consider using distilled water instead. Place the lid on the container and shake gently. Use the finished product the same way you would use any eyeglasses cleaner.