The schematics for the "zapper" are in the book " The Cure For All Diseases ". The parasite killing herbs and the zapper have both worked for me to make my rosecea go away. The zapper works for me in less time when I use to get attacks. My attacks started with a "tingling" in my face, Then swelling and then small sores on my nose.The parasite herbs took 3 weeks for my nose started healing and the zapper took about 4 days.