Product review (5 stars): These Solved our Problem!!!
These solved our problem!  Our washer kept "walking" across the floor and would often block the entrance to the laundry room.  It has not budge!

We can close the door again.  We had an issue where the washer block the door and we had to try and move with a one inch space.  It took hours to move it, just to be able to get back in the room and move it back.  We would constantly need to check on the washer, to be sure it had not moved too far.

A Big Hit in our house.