I'm re-submitting this post since somehow the part in bold was changed by the board...  >:(

All the planes I flew, in fact as it turns out, almost every brand of jet has installed in the cockpit a windshield spray called Rainboe.  I guess this was supposed to be just like RainX for cars.  But as I recall, very few pilots ever used it on aircraft windows since if you inadvertently sprayed in on a dry or not wet enough windshield it would make a mess you could not see through and you would not be able to get rid of the sprayed-on mess until you landed and had to listen to the poor mechanic would yell at you for making the mess which was hell to remove