Product review (5 stars): They work!
We finally remodeled our gross unappealing laundry room, including laying a new floor. Unfortunately our front loading washing machine then started "walking" forward into the middle of the room. This caused three problems: 1) the washer is super heavy and difficult to move back into place 2) I worried about how shoving it back into place over and over would damage my new floor and 3) it would walk within a hair of a newly installed hot water heater and I was afraid it would damage it eventually. I did my research and initially planned on getting the cheaper version of these... I mean who wants to spend 40 something dollars for something like this? But I really wanted this problem solved after all the work we had done getting this room looking nice. If I bought the cheaper ones and they didn't work then I'd have to send them back and get these anyway or just give up and be frustrated. So I sprung for these. So far I've washed all kinds of loads from delicates to towels to comforters and the machine stays put. I'm so happy! Is it possible the cheaper ones would've worked also? Maybe but who's got time to mess around. These things are the best and easy to "install" if you have two people. Highly recommend!