I think if you warm it with a heat gun or torch if you are careful not to ignite it, it scrapes off much easier.
In my neck of the woods I would be putting it on, the calcium they use on the roads here eats the crap out of vehicles.

55 Vicky & customline
58 Rack Dump, 55 F350 yard truck, 57 F100
59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?