Product review (5 stars): It works - It works REALLY well!
We bought a new LG front loader washer/dryer set 3 years ago. (love em) except that darn washer would really getting to vibrating and actually walk away from the wall.  We have a small wash room area so for 3 yrs it was wash clothes on Friday morning and in the afternoon, I would have to muscle the washer back into its place.  Heavy, hard to move, BUMMER!
I came across these Anti-Walk feet and thought - what the heck...try em.  We just put them through their first test this morning and ..eureka!!  I am so sick at myself for not doing this 3 yrs ago. The machine still vibrates (can't be helped as the loads are not always perfectly balanced out) but..
1. Vibration seems to be less
2. Much MUCH quieter.  I could hear the machine rattling from the living room before, now .. silence.
3. Most importantly - the machine stayed right where we put it...(Hardwood floor-didn't move at all)

The major complaint I heard about front loading washers was the vibrating and walking- this product should be provided with every washer purchase!
If you have the same problem - buy this!! It really does work...
For me, no more Friday afternoon wrestling match with our washing machine!