Metal accents around or on your windows can add a classic touch to your home. But those accents can become rusty, and the rust can drip or transfer onto the surface of your windows. Rust is a type of organic stain that should be removed promptly so it doesn't transfer from your window to yet another surface. Remove rust stains carefully so your windows aren't damaged or scratched, and tend to the metal objects nearby to prevent future rust transfer.
Pour 1/4 cup cornstarch, 1/2 cup ammonia and 1 cup white vinegar into a bowl and stir. This glass and mirror cleaning solution removes rust stains and cleans your glass.
Dip a clean, lint-free cloth into the vinegar solution and wring out the excess moisture. Wash your windows with the solution, focusing on the rust stains. Rinse your cloth with water, as needed, apply more vinegar cleanser and continue to wash your windows until the rust stains are removed.
Rub a halved lemon on any stubborn rust stains that remain on your windows. Lemon is a natural rust remover.
Use a clean, wet cloth to rinse the lemon juice and the cleaning solution off your window. Rinse your cloth frequently.
Dry your windows with a squeegee. Position your squeegee at the top of the window and move it toward the bottom. Wipe your squeegee blade with a clean towel between each swipe on the glass.
Towel-dry the edges of your window or any other area where moisture remains after using the squeegee.