
You may be able to get off crusty or gritty stains by gently using a razor to scrape them off.X Research source Apply the paste to the affected area with a clean cloth and give it a good rub.

Make a paste with water and a cleaner that contains oxalic acid, such as Zud or Bar Keepers Friend.Use a sponge or cloth to rub the stain, and proceed with regular cleaning. Spray the affected area with pure vinegar and let it sit for at least five minutes.Use a rag or cloth to wipe the squeegee dry between. Rinse the area with water and proceed with regular cleaning. Start at the top left of the window and snake your way down going from left to right and then right to left. Use the plain water spray bottle to lightly pretreat the window and follow up with a spray bottle filled with the same ingredients you used for the outdoor solution. Dampen a sponge with cleaner and rub at the stains on the windows. Clean the Inside of Your Windows Indoor windows can be cleaned following the same concept, but steer clear of using a drippy mop or hose. Use a mineral deposit removing cleaner, such as CLR.

There are a few methods you can try to remove marks on inside or outside windows: How to Super Clean the INSIDE of Your Windshield (No Streaks) ChrisFix 19M views 7 years ago How To Clean A Window Quickly & Easily Like A Pro Anders Fishing 525K views 8 years ago NEWBIE. Outside windows are especially prone to stubborn stains because they are exposed to hard water runoff, minerals, bird droppings, and elements that can cake on dirt and grime.
