Yes, I agree with you that nanoparticle silver works.
But not all the time, especially for very stubborn cases of infections and diseases.
Time and time again, people post on forums that their low ppm products do not work, what options do they have left? If the low ppm product did not work form them?
High PPM, Atomic Particle Colloidal Products.
Its just another option worth trying if all else fails.