"I hear rain x sucks"
I can confirm that big time. Tried many times, treated the right side of the car from inside in summer. Got fog an all windows regardless. Tried the other side in fall, the same thing.
Very hard to get the hase off after application, even on very clean glass.
I wonder what this kind of product is supposed to do to the glass when the temperature gets below the dewpoint? What mechanism is supposed to be behind anti-fog products?
I do understand how to use outside/recycle air modes and I know when my A/C kicks in to defog...