I love this machine!! Just got it yesterday and started last night. Its kind of hard to feel them quiver when I hit them SO HARD! I am now keeping a log of where I feel them move or bite so when I hit them tonite I know where to go. I have not used it on my head yet. I had taken a good dose of L-Cysteine on Sunday and then took Lugol'sIodine on Monday and got good die-off mostly in my head. Where you the person that said L-Cysteine 'skins' them? I know someone in here said that. So I think that is a good protocol for my head ones now. Definately want to keep using this machine! Thanks for posting your success!!