30,000 worked good for mine fungus infection on the groin. I'm not doing the 7/20/7/20 because it's not a parasite it's fungus. I do it for a hour stright.
Has not cured the fungus but I have seen the best improvement for it. Only other thing that has worked is using 24 ppm colloidal sliver gel.
I just got another zapper it's got tons of different frequencies. Hopefully it works alot better.
So I shouldn't hold them in my hands? One in one hand and another say back of my knee?