Right now I am using 30 hz in the day times & a 15 hz Silverado at night. I just left a couple of posts here about my zapper experiences if you want to check them out.
I plan to use the zapper for the rest of my life, at least an hour each per day, if at all possible. Those pathogens & parasites
are everywhere. Why give them a breather, or assume they aren't there anymore? They reproduce rapidly and we all know how deceptively they can inhabit the body. Eeeyuck.