A perfectly working wiper blade on your windshield is as important as you making sure that you are safely buckled in your seat. Drivers make driving decisions based on what they see. And if you are driving in the middle of a bad storm with no wiper blades working, youd be lucky to get home unscathed. A lot of accidents as well as injuries can be prevented by simply checking and replacing your wiper blade every six months. Keep in mind that wiper blades are made of rubber. And rubber deteriorates over time due to frequency of use as well as extreme weather conditions. A warped wiper blade may not efficiently clear your windshield for you when you need it. So keep your windshield clean and check if your wiper blades have not warped from the hot summer sun or gone brittle from the cold winter air. Either way, you would need to replace your wiper blade with a new one.