No, not that nasty stuff. I was talking about the rockguard on the bottoms of the doors, rocker panels, etc. I've used the no cleanup 3M and the assorted spray cans but just wondered if there was something better.Texas you talking about the stuff coating the frame and suspension bits? Black stuff that never gets hard and makes a mess if you touch it? It is some sort of wax/petroleum based undercoating. Stuff really makes a mess when you got one on the frame machine pulling it. Gets all over the chains and clamps, everything. Closest thing I found was ultra cheap undercoating in a spray can. The stuff that never really dries. Cheap auto parts store undercoating.