Product review (5 stars): Put on the Feet, the washing machine can't walk!
These work extremely well.  Our machine "walked" whenever there was something heavy in it or heavy and light had been mixed and the machine went out of balance.  We learned not to do that kind of mixing!  When we put the machine on the Feet, the problem was nearly solved.  We did not use the adhesive bottoms because the space was so small and hard to get to.  If you can put these on your machine as it is being installed, you could use the adhesive more easily. If it's out in the open, no problem any time.  A good product.