Product review (5 stars): Shake does go away!
My new nice whirlpool front load washer shakes heavily (I guess all brands shake the same way) in high or extreme high spin mode. It even makes the dryer next to it shake. After searching on Amazon, I found this product has relatively best quality/price ratio. It does work! Now the washer just shakes by itself during the instant of speeding spin, dryer doesn't shake anymore and I don't feel much vibration of the laundry floor. I think washer sitting on pedestal makes shaking worse if without this product, albeit pedestal looks pretty. I will try to test this product without pedestal later.