Visual inspections every once in a while can offer plenty of details about your car. The same rule applies to the windshield wiper blades. Sure, you can spot problems by checking the visibility and sounds (if any). But then, visual inspection goes a little further. Metal corrosion is one of the first things to pay attention to. Normally, it occurs around the joints. Take a peek at the claws too. If you see more than just a dot or two, you might want to correct this problem before it becomes severe. Sooner or later, it will reflect on the wiping movement.