anyone tried any of the liquid edead from elemental designs or any similar liquid sound deadening substance? It seems to be an ideal solution to my truck as I dont have the time or shop space at the moment to pull the interior completely and leave it out as I roll large amounts of mat type sound deadening into the vehicle, just dont have the time anymore really. And its looking as if the liquid would end up being a bit cheaper in the long run. Just want to know if its worth it, does it work anywhere near as well as the sound deadening mat? if so how many coats did you use. Im looking at doing the doors, floor, and rear wall of my screw...and partially up the the firewall, doubt if i do the ceiling underneath the headliner.