Product review (5 stars): An Amzaon purchase.  But, 1 problem I have!
I am now on my second unit. I have used a Wonder washer for a number of years, and it has saved me many hundreds of dollars.  However, there is one thing that I would like to see changed, that is the knobs for turning the washer on for x number of minutes.  The knob is such that it is very difficult to turn them.  There should be some sort of something that stands out so that your fingers will not slip when trying to turn it.  Also, the knob is not easy to turn.  A person with arthritis in his/her fingers would have great difficulty turning it. Just change to a different type of knob.