Product review (5 stars): Can't hear the upstairs washer or dryer any more
We have a front loading washer and dryer, located next to the kids bedrooms, on a hard tile floor, upstairs.

In the various spin cycles, the washer and dryer would vibrate through the floor and you could hear it downstairs and in the kids rooms.

Both units would occasionally creep/slide forward.

These have significantly reduced the sound for the kids rooms and downstairs area, and they no longer creep.  Super solution, great price.