Zapper is more of a torture than garlic----more complicated and expensive to use. $1.60 garlic are enough for one month consumption---I bought from Chinese grocery store. In fact, I just swallow them, so no burning. And I like them with food. Besides, what is better than my yeast infection in vaginal is killed plus any bacteria/ viruses in esophagus are killed, too. Being a female, one cannot help not having yeast infection due to upset of good and bad bacteria in vaginal and the stomach. Also, I've heard people with Amalgams in teeth should not use zapper.