Product review (5 stars): A sound damping solution that actually works!
Works great!  We use it with a whirlpool duet which is up on pedestals.  Finally we can use the washing machine at night without waking up the whole house.  You still hear the drum noise if you are on the same floor with it, but nothing vibrates thru the house anymore due to poor structural acoustics.  Was skeptical at first, but very pleased.  Worth the price.