How old are your blades? If, like me, you live in a climate that does not get much rain blades tend to go bad faster than you think and since you only think about them when you use them it may just be you need new ones. I agree that Bosch Micro Edge Blades are the best.
One more thing if the smearing is happening when you clean the windshield what kind of washer fluid do you use? The cheap stuff in the gallon jugs at the local auto part stores is not always the best. I go to the Mercedes or GM dealer and buy their fluid. The MB stuff comes in little tubes you mix with a gallon of water a works the best.
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