It seems that you're not familiar with MWO which doesn't kill anything, neither in a jar, pond or our body. PEMF devices work by inducing currents in body tissue. MWO uses electrostatic (potential without current) field of wide range frequencies, so it utilizes capacitive rather than conductive properties of our cells and raises their potential back to the level where they can perform and protect themselves. Corrupted cells have potentials in range of 0.7V and while healthy ones have nearly double that. Their oscillatory rates also differ.
Healing and curing is not just about killing microbes in a jar of water.
As for the results - they're very encouraging.