Product review (3 stars): Good but lacking something...
I have had these pads in place for over 1 yer.  These vibration pads do an EXCELLENT job of eliminating the transfer of vibrations from the washing machine to the floor but the machine can still vibrate off the pads.  The pad's design absorbs most of the vibrations resulting in much quieter washing machine operation.  After a while, the machine will vibrate itself off of the pads and you are back where you started - or worse since the machine will be lopsided on only 2 or 3 pads.  Depending on how your washer is arranged, installing these pads on the rear corners can be VERY difficult.  I wish they were designed with an indentation for the washer feet to sit in so that I never had to mess with them again.  As it is, I am looking for a replacement that will stay under the washer feet AND absorb the vibrations.