Zapping is a term used for zapping bacteria, viruses, and flukes within the body with a slight electrical current from a nine volt battery. Each living organism has a particular resonance(vibrational rate)and can be killed (zapped) by using electrical frequencies. My zapper has only two frequencies 2.2 kHZ and 30 kHz. These two frequencies are the common ones -I think- There are other frequency generators and syncrometers on the market but we are retired and can only afford the one we bought. I am diabetic and according to Dr. Clark all diabetics carry a pancreatic fluke so zapping is supposed to kill the flukes and heal the insulin receptor sites. We shall soon see as I have only zapped 5 times (once per day). The theory is that if diabetics eliminate Aspartame products such as Nutra Sweet and kill the flukes diabetes bites the dirt. I certainly hope so as the oral meds do absolutely nothing.