I had a terrible case of the jock itch and yeast infection on my privates parts. I put the hand holds of the Huda Clark Zapper on each side of the crouch and zapped seven minutes then rested twenty minutes. three cycles 7-20-7-20-7. CURED. The skin was still raw, even had small pits where the itch had been but the germs were gone. By the next day the skin was better and by the third day every thing was fine.