I am with BigMatt here....I buy new blades in the spring for the rains and then again in the fall before winter. There is nothing better than having a nice streak free windshield during rainy weather.

I also use RainX but last time I decided to try the Castrol line of water repellant. It works ok.....not as good as RainX imho.

 

I do recall reading somewhere you should change your blades every few months. Some guys are getting 2 years!!!!!!!!!!!!!!!Holy Cow................... I change mine every 3-4 months. I never have a problem no matter what ones I put on.

 

Have you tried the RainX windshield washer fluid?
Not nearly as much work as the direct application product and works exceptionally well.