Your home needs a thorough window washing twice each year—once in the spring to wash away winter dirt and grime, and once again in the fall before winterizing. Pick a cloudy day to work; this will help prevent streaks on the glass. Wash out window wells with a hose, then remove any storm windows and set aside for the season. Wipe screens clean of cobwebs and debris, and take a soapy sponge to window tracks. Dry with a lint-free cloth.