Basic Zapper Work?An explanation by Don CroftAll parasites and diseased tissues are positively charged. The zapper introduces negative ions through the skin and into the body’s living tissue, killing the parasites by reversing their polarity and also helping to heal the diseased tissue. Healthy tissue is negatively charged.The zapper’s circuitry is built around a 555 timer integrated circuit which emits a nice, positive offset square wave of direct current from a nine-volt battery (stepped down