Product review (5 stars): MUST HAVE
If you have a washer and dryer - even ones that are perfectly level - these are essential to keeping the noise and vibrations down in your home.  Even the most balanced and level W/D's will make noise and especially vibrations over time.  These sorbothane isolation feet absorb the vibrations and easily cut the noise/vibrations by probably 70-80% at least.  My W/D are on the second floor of our home and for years we could always hear them running from downstairs in the kitchen and dining room.  When the Washer was in spin cycle it would shake our can lights and it was really annoying.  Once I put these in place we barely hear the W/D at all now. I think W/D manufacturers should just install these types of things at the factory.