Purchased a set of these wipers for my wife's Rav 4 March of 2012.  As rainy season was about over, decided to keep them in the garage until a couple of days ago.  Installed them easily.Fired them up to try them,,,,windshield was wet from morning dew.  Streaked badly.However drove off with them on as was in a hurry and felt that I would deal them later.Later yesterday, got a bit of rain.  Turned them on, they streaked so badly that almost unable to see at all,,,,the left side far worse than right side.Windshield is clean and smooth,,,,no roughness or defects.Today I called Rain-X support  1-800-416-1600 and spoke to a lady named Adrian.Told her of my issues.  She asked when purchased.  I said March 2012 and installed a couple of days ago.  She then said that there blades were only good for 6 to 12 months.  I told her that had been stored.  She asked if in "temperature controlled environment"?. I said in the garage where temp never exceeds 85 degrees and were kept in original packaging in a dark closet.  She said that was the problem.I told here that the original wipers on the Toyota Rav 4 were 3 years old and still functioned better than Rain-x that were 6 months old, stored properly,,,not exposed to elements and never used, and yet were far worse in smearing of windshield than the old originals.She then told me that they have 90 day warranty and with receipt I could return.  I said that I purchased 6 months ago and had kept for when I would need them.  She said that was too bad and there was nothing that could be done,,,,,that my improper storage was why they failed.I asked her if 3 year old originals that had been used and baked in the sun and elements were superior to Rain-X blades that had been stored properly for 6 months and unused.  She said that she was not suggesting that at all.As an aside,,,,made in Korea, assembled in China.Cannot understand why Rain-X even provides a Customer Support number,,,,as there certainly is no support here. If Adrian was my employee, I could can her as she truly is inept.Likely the worst product that I've ever purchased.