Windshield wipers are the parts that help in removing the dirt and other materials from the windowpane. You can know they need replacement when:

• You see streaks on the glass instead of complete cleaning
• Screeching and rubbing sounds
• Wiper blades bounce or don’t touch the glass surface properly

Sometimes, the problem can be in only the rubbers of the wiper. Whereas sometimes, the socket holding the wipers may become misaligned over time. So, it is advisable to make a thorough check before replacing the windshield wipers.