They will use the internal zappers, a thing that SCAREED the great self-experimenter Dr. Hulda Clark (I gave her 2 free ones years ago and she told me she was too scared to try them, so I gave her 2 new fresh ones. I have no idea who will use it for what. They have been using the dewormer in cancer treatments and love it and wanted more things that lead to the desert parsley and they have 1 internal zapper which has lead to the desire for a 10 person trial.