Streak-free windows brighten any space! Clean on a cloudy day to avoid quick drying. Use a vinegar-water mix or window cleaner, and wipe with a microfiber cloth. Squeegee from top to bottom, wiping the blade after each stroke. Buff with a dry cloth or newspaper. Avoid paper towels, and clean frames too. Use distilled water for best results. Clean twice a year for sparkling, clear windows every time!