There's really no way for me to "know" if this is doing what it says. I can only assume that it is. It's very easy to set up and use!
I am very disappointed with this zap it. It does not perform what it is intended to do . My unit does not re-charge my battery for my phone. Wasted money$$$$$$$$$$$$$$
I believe it works o.k., but would of like more instructions with it. Also how it works to sanitize. I thought it would plug in to my regular electricity and not my computer with that port that is needed.