I have tried many things, but the best seems to be white kitchen trash bags, even when the snow melts and then freezes on the bags they just need to be whacked lightly with hand or broom. I will never use Pam again, it makes a gooey mess, WD 40 is better, also it's not a good idea.imho, to cover the LNB as this holds condensation in, not good. In the past I used acrylic plastic, like in overhead recessed lights, cut a piece long enough to go half way around dish and about 10" wide, then cut a piece as wide as the LNB and attach to top and have it extend about 3" over the front of the LNB. The plastic does not work very well if you get a lot of wind blown snow