Hi Everyone,I just had my 2009 Honda Odyssey sound deadened using dynamat extreme and some dynaliner by dynamat. I love everything about this car except the road noise associated with it. Its smooth, comfortable, luxurious, very roomy, handles very well, reliable, safe, and just an exceptional car all the way around. But the road noise on the highway kills me. I also drive a 2009 honda accord and it has the same problem. So I began searching for solutions and found this site which had a lot of helpful information. I appreciated all the information, support, and ideas everyone brought to the site. Therefore, I decided when I go ahead with this project, I would document everything I could and share with everyone here so i hope this helps someone. First I visited local shops who do this and got estimates/ideas. Costs to dynamat the floor and door panels ranged from $1200-$1600. typical charges were $60-70/hour for labor then material. To much in my opinion. So next I spoke a guy I normally use for collision repair. He's a very skilled and nice/trustworthy guy I've done business with who does this on the side (he works for a collision repair shop). He's done it a few times and agreed to do it. I told him I wanted to keep the cost down by buying the parts myself and leaving the labor to him and he agreed. I bought:2-boxes of Dynamat Xtreme for $142.99 (each) on amazon and got free shipping thru amazon prime.2-rolls of dynamat dynaliner 1/4 inch (32x54" each) for $49.00 (each) on amazon with free shipping.His labor to dynamat the floor and all 5 doors was $500. Total = $900 (previous auto shops quotes didn't include dynaliner)Since he worked on it after primary job it took 1-week. Otherwise maybe 3-4 days.here are some pics to show what he did.