What is the best way to clean windows and screens?

Use dish soap and water. For windows, apply with a microfiber cloth or sponge, then squeegee dry. For screens, lay them flat, spray with soapy water, scrub gently with a soft brush, rinse with a hose, and let dry. Skip fancy sprays and ammonia-based cleaners—they’re overkill and can damage tints or coatings.