what the hell, did you know this? dynamat sucks

hey guys, i just went to the "Home Depot" and bought a role of "Bitchathane" which is used on roofs but does the same thing as "Dynamat" and it only cost $20.00 which was enough to do the whole back wall of my truck. and all other audio stores said they wanted $180.00 just for the same amount in "Dynamat" what the hell is that about.

its splash face sealer used to seal windows and doors from water. if you leave your doors open 2 3 days in extream heat the smell will go away. heres the start of mine