To Handhabeung is not much to say. Keep top Press 15cm distance and the frost is gone!
Against this snow spray has no effect, or you would have to spray a lot, but it is not even thought of that!
I am always happy when I see others who have to do their discs with a scraper clean because the scraper not only scrapes the ice but also over the years the disc. Because I drive a lot about car 40000km a year and also for later hour I always gepflucht on my first car when the sun came out to meet me a car or deep and I saw all the scratches. At some point it was so bad that I have the disk swapped.