The night before we got hit with snow last week, I decided to clean my wipers. I used Armor All cleaning wipes and the 303 Protectant I recently bought (never used it before). I left the 303 on for about 3 hours and wiped it off with Toilet Paper. It definately made a difference, the wipers seem to move across the windshield with alot less effort and the one on the drivers side quit skipping. The wiper blades are about 1-1/2 - 2 yrs old.