Wiper blades are exposed to dust, dirt and debris, all of which contribute to their wear and tear. Driving with worn wipers can be dangerous, and you should replace them as soon as you notice impeded visibility from streaking or an inability to clear the windshield.
On some wiper blades, you can replace the rubber squeegee part with a new wiper blade insert, while others require the replacement of the whole blade.
Manufacturers have various hook designs. In some, you can simply pinch and pull to remove the blade. In others, you need to push a button or pull a latch to unhook.
Some jiggling might be required. Wrap the bare arm or hook in a towel to prevent damage to your windshield if the wipers turn on or the arm smacks the windshield.
The optimizer solution helps remove debris, grease, oil, etc. from the rubber.
There are three styles of wiper blades:
These are the most common type of wiper blade and allow you to remove and replace just the rubber insert, which is the most cost-effective replacement. Frame-style blades tend to work well in most situations.
These blades adopt a similar design to the frame-style wiper blades, with one exception: They come with a rubber sheath over it so ice and snow can't collect. They are designed to withstand harsher weather environments.
3. Single Beam
These are a low-profile and aesthetically pleasing wiper blade that don't collect ice very easily. Single beams tend to be more expensive, and unlike the other types, they require you to replace the whole piece and not just the squeegee part.