Anyone have any tips that they know of or use to keep salt from freezing into a block in their spreader. I have a V-box and I had a miserable bout with this the last event. I don't leave salt in there at all, only load up, salt and put back in the pile if any left. Can I mix something in the box to prevent this. I know there is a little moisture in the pile, but it remains covered, as does my spreader but man, what a pain in the but with the digging bar and a total Time KILLER!