I am not accusing you of spam or anything! Please excuse me! It's just that Dr. Clark states clearly in her book, and on her site that ANY DC between certain ranges kills ALL parasites and all of the zappers I've heard of are coverd, unless you have found some that don't meet up? She did used to directly zap each bug, but she concluded that it was a waste of time when she found you could get them all in an hour. (Read here http://www.drclark.net/disease/zapper.htm) Sorry if I'm just debating. You have a lot of great info!! :)