Drag Racing Tech - removing sound deadener (dynomat)

Have any of you guys removed aftermarket sound deadener. I tried moving some from my car and it almost impossable. The best thing I can find is paint thinner but it doesn't work that great. Any suggestions?

I've used a heat gun to soften it, then it peeled up but it was still a pain to do

Use a hair dryer or some sort of heat to soften it up.

Peel it off as best as you can.

Think I used gas, since the stuff is made from tar/etc, to remove the residue...

Its definately a bitch to do, have fun man