On the contrary, Dr. Hulda Clark wrote in page 19 of ”The Cure For All Diseases” on the very first paragraph under the chapter title ”Building a Zapper:”
”No need to single out specific frequencies or to sweep through a range of frequencies one kHz at a time. No matter what frequency it is set at (within reason), it kills large and small invaders: flukes, roundworms, mites, bacteria, viruses and fungi. It kills them all at once, in 7 minutes, even at 5 volts.”
In pages 13 to 14 of ”The Cure for All Diseases,” Dr. Clark wrote about using multiple frequencies with disappointing results ...
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