To avoid scratching, you should also remove any rings, bracelets and watches you’re wearing before you begin. These can puncture the vinyl. [1] X Research source Avoid cleaning the glass in direct sunlight.
Never use alcohol or ammonia based products, Windex, dishwashing detergents or any other cleaning products that contain abrasive chemicals. If used, these substances will damage the vinyl (and most likely void your warranty, as well). [2] X Research source
Never use paper towels, household sponges or other abrasive cloths to wipe down the panel. These materials will scratch the surface.
Never use a high pressure nozzle to rinse off your windows.
Never use bleach products or any other cleaning agents with abrasive chemicals. [5] X Research source
Follow the manufacturer’s directions for the particular product you’re using, since application techniques may vary from product to product.