Deteriorated wipers produce an uneven wipe, which prevents proper contact with the windshield surface. This will create streaky or unwiped areas, severely impairing your driving vision. And remember - what you can't see, can harm you!
Streaking
Caused by dry rubber that has hardened and cracked. Streaking can also be caused by tree sap, road tar and other foreign substances on the blade rubber.

Chattering
Caused by the "permanent set" or "curve" in the rubber some wiper blades develop while they are parked. This condition is characterized by the chattering sound the blade makes as it passes over the windshield.

Worn Rubber
General rounding of the wiping edge caused by long service.

Split Rubber
A condition found on blades that are old. Sometimes due to the effects of the sun's ultraviolet rays on the rubber.

Bent Refill Vertebra
Sometimes caused by ice scrapers, automatic car washes or vandalism.
CAUTION: Do not attempt to refill wiper blades that are distorted, bent or badly worn. Replace them with new wiper blades to avoid the possibility of damage to the windshield.

Bent Wiper Frame
Sometimes caused by ice scrapers, automatic car washes or vandalism.
CAUTION: Do not attempt to refill wiper blades that are distorted, bent or badly worn. Replace them with new wiper blades to avoid the possibility of damage to the windshield.
