Product review (3 stars): Rinsing issues
While the Wonderwash did clean my clothes, I found that the load capacity (being very small) meant that I spent too much time turning the machine to get through my washing.  I ended up purchasing a breathing mobile washer (also available on Amazon) and a large tub for laundry and am able to get through regular-sized loads more quickly than an electric washing machine.

As for specific issues with the Wonderwash, although it did an adequate job of washing my clothes, rinsing the clothes in the machine was less than adequate.  I found that I would have to rinse my clothes in a tub (not the Wonderwash) in order to adequately remove the soap residue.  Also, the amount of soap called for in the instructions is too much.

I probably would not recommend this machine.  However, it does still warrant three stars as it does wash the clothes.  Rinsing, however, should be performed elsewhere.