You don't need millions of frequencies if you can target a parasite's exact resonant frequency. The Thundervolt's Frequency Freeze circuitry does precisely that, and stays there until the parasite is destroyed. Then it moves on to the next parasite. Frequency freeze is a "hunter-killer" circuit. This function works automatically, without user input. During a typical 10 minute zap session, frequency freeze may electronically find thousands of parasites and kill them all.
Our Body Tester gives a number proving the effectiveness of Thundervolt zapper frequency freeze operation.