[focusracer]

If you want remove it, dish soap, one of the best wax and grease remover for light duty messes. Or you could go to crappy tire or whatever and get a bottle of wax and grease remover or wax and silicone remover. Personally, I wax my windshield about 4 times a year with a hard or paste wax and if I ever do bring her through the coin toss wash bay I always spray a layer of the wax on the windshield and let it dry as I drive away. Water just beads off, not to mention a nice layer between your windshield and ice and snow.