I've done some research and I have found that huldas cleanses can be beneficial without the zapper. The zapper doesn't penetrate the intestines (according to her book which I do have btw) therefore the herbs are then used.
I also was looking around for zappers and haven't come across one that seems reputable, every site talks about how there's is more beneficial than the next and some sites say cheap ones are rip offs etc. Do you know of a reputable place that seems reasonably priced and is the real deal?