Hulda Clark says you can't rinse it off, there is always a residue.  She 
recommends borax and washing soda.  Borax in the dishwasher, with vinegar as a 
rinse aid.
R


  When I wash a few dishes by hand here and there I use liquid dish soap, and 
  because it is concentrated I dilute it a lot with water.   I always rinse 
  well.  Otherwise I use a dishwasher about once a week because I 'pack'  it 
  with dishes before I turn it on.  Saves on water.