There’s nothing more frustrating than cloudy streak-ridden mirrors, especially after you’ve just cleaned them. Don’t worry; learn how to clean mirrors with these tips and solutions. Use a spray cleaner that evaporates quickly and never spray the mirror itself with the cleaner. Instead, spray a clean, lint-free cloth and wipe down the mirror. To avoid streaks, dry the mirror completely with another clean, lint-free cloth—like an old T-shirt.