How do I know if I need wiper blades?

Four Signs You Should Replace Your Wiper Blades

1. Leaving Streaks on Your Windshield. When blades are bent or damaged, they will become less effective at clearing your windshield of rain, snow, sleet and other road elements. ...

2. Squeaking Noises During Operation. ...

3. Chatter Caused by Extreme Temperatures. ...

4. Aging and Advanced Wear.