You should never use a zapper for only 15 mins! The Hulda Clark protocol is:-
07 mins on
20 mins off
07 mins on
20 mins off
07 mins on
The reason for this is because the parasites next stage starts plus its also less hassle on the body from zapping. You must adhere to this at all times especially when new to zapping. You could open yourself to damage if a parasite lets off a virus for which you dont kill in its next stage!"£%£ If you have a Terminator zapper then a minimum of 1 hour is required everyday without fail!