I, of course, AM the dishwasher.  Since I’ve placed this mat by the sink, my feet and ankles have had much less soreness than previously (when just standing on hardwood flooring).  I have twins, so fishes is a major undertaking on some nights and, while we do have a machine dishwasher, there are many evenings (ahem, my wife)  that call for the hand washing of specific dishes...  I’ve been exceptionally happy with the mat!