Clean the glass surfaces on a regular basis. Use a glass cleaner or equivalent in order to remove normal tobacco smoke and dust films. Use a non-abrasive cleaner such as Bon-Ami or equivalent on the outside of the windshield. Clean the wiper blades using a cloth soaked in one-half water and one-half washer solvent or one-half water and one-half methanol alcohol. Rinse the blade with water after cleaning the blade.