1. "Effective enough" is purely speculative.
Her specific application of frequency, voltage, and offset seems to be very effective for some uses - or she would have not continued to use it effectively. We should be careful when using the offset she used as there are some people who get "burns" at the contact points when using offset.
2. It's a general detoxifier that neutralizes the static charge of unpleasantness in your body. So it won't get everything but will reduce your pathogen load thus speeding up healing.
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