So, what other devices do you find more effective than the zapper, and for what purposes? I kind of got lost in that lengthy rant and couldn't figure it out. Are you saying that the Dr Clark zapper set for the "sweep" hour long program isn't as effective as inserting a Smart Key and zapping for just one pathogen, or are you saying there are other zapper type machines out there that are simply more effective? I would be interested to know.