1/4 cup vinegar
1/2 teaspoon liquid soap
2 cups of water
Add ingredients to a spray bottle. Shake to blend.
Spray the solution on your window and wipe off with an old fashioned cloth diaper (they are often sold as burp cloths now). The cloth will not leave any fibers on your window like paper towels do.
Are you obsessive about having perfect, streak-free window? Probably not, but I used to be. Here’s a tip to track down where the streak is a little faster: Use the cloth to remove the window cleaner using a vertical motion on the outside of the windows and remove it using a horizontal motion on the inside of the windows. It makes it much easier to figure out where the streak or spot is with this method.