I've been using the mini $10.00 zapper. After using it 20 minutes, I do notice any feeling of movement in my muscles in -- say my arm, etc., permanently stop.
I believe that --due to the fact that i need to do some maintenance colon., intestinal cleansing -- that some larvea stages of adult parasites could have been traveling outside of the digestive tract to get away from the parasite dewormer.
The Zapper seems to put an end to that but I would still use an herbal dewormer .