I'm making the change from sand/salt to straight salt and will be using Magic Salt for one site. I'm trying to calculate costs. In reading a report yesterday (I think it was from NY), I remember reading about salt coverage being 300 pounds per lane mile. In thinking about that later in relation to my situation where I'll be treating a parking area, that seems way low, considering a lane mile at 63,360 sq ft (5280'x12'). The area I'll be treating would be only about 10,000 sq ft. Am I missing something? Also, since I don't plan to use the spreader anymore, I'm not offering sanding or salting of large areas. There is mostly gravel in this area, so could I use the Magic Salt as a deicer on any lots I may get that want sand?