How can I stop the panels in my car from rattling?

How can I stop the panels in my car from rattling?

Is there a way I can improve the sound of my stereo without adding more equipment?

If you're having problems with your vehicle's plastic panels vibrating, the body's steel flexing, and a general "rattling" coming from mysterious places, you can solve most of these problems by using a combination of our sound-deadening materials such as Punch Mat and Noise Blocker. 

Noise Blocker is a spray-on type of sound-deadening material that you would apply to curved or upside-down surfaces that are hard to cover with our other product, Punch Mat. 

Punch Mat is a high-density material that turns vibration into heat, and makes the car's interior much quieter to ride in. It applies to the surface of your vehicle (using an adhesive backing) to any flat or lightly curved panel to eliminate unwanted noise.