MMmmmmm Grease! Also the bugs will love it come spring time, I used to use the black bin bag method to help with snow, simply put a large black bin bag over the whole dish and tie it loosely in a knot round the back of the dish, the signal is not affected, as the bag flaps about in the wind the snow cant land on it, and being black any ice or snow on it soon melts if/when the sun comes out. You cant beat having the dish at ground level in snowy states, one brush and you are back in business, the roof is the LAST place for a satellite dish. I don't have any snow problems any more with the motorized dish I simply point it into to the sun and it all melts off, if its real bad I can motor my dish way over to the east or west giving it a lower profile and keeping it out of the worst of the wind, two years now with out budging, I go and check it every few moths to see if it needs re-tweaking but it never has! Snow! Bring it on!