I think for some people, at least for me anyway, the expense of purchasing a decent zapper is what holds some back. It's a lot of money (speaking personally here) for something that may or may not help that particular individual's situation. I, for one, have never purchased a zapper for that very reason, but hey, if I were *given* a zapper I'd happily zap away. I'm sure there are many others who feel the same way. I'm not saying I'll never break down and splurge on one, but I will definitely always try the cheapest option first.