After cleaning your glass, use a damp cloth to wipe the rubber blades, removing bug residue, wax, and other dirt build-up. Although rubber dressing helps preserve, protect, and beautify the rubber and vinyl parts on your car, you should not use dressings on your wiper blades. Rubber dressing on your blades will cause streaking and smearing, impairing your vision. The best overall maintenance of your blades is keeping them clean. No amount of cleaning will keep your blades in perfect condition.
Wiper blades wear with each use.
Most wiper blades will last about one year. When your blades become worn, dried, or faulty replace them with a new set. Most manufacturers recommend replacing wiper blades at the beginning of fall. If your car is a year or more old, a close inspection may reveal dirt build-up in the corners of your windshield and rear window around the trim. To remove this caked on gunk, use an old toothbrush or detailing brush with your spray cleaner.