Pro cleaners reveal the simple, streak‑free method for washing windows—and the common mistakes that make them look worse.

Dear James: My new house has many windows and I have a problem cleaning them without leaving streaks, especially on the south-facing ones. How do professionals clean them? — Alex J. Dear Alex: You ...

Windows seem to attract water spots, smudges, and smears, making the view outside look like a hazy mess. Immaculate windows can transform living spaces, but chances are you’re not excited about ...