CMIFIW, but it's not exactly the electricity that 'zaps' the pests. It's the carbon-tip that reacts to the electricity/saltwater and produces hydrogen/chlorine or something that gets the anemones. Going from a couple years ago when PaulB started posting about it on RC, but I didn't really keep tabs on it (large angels will clean any aipstisa off for me, free of charge). Not sure if he's selling products now or what, but they are quite simple to make.