One of my former students (Steve Caton a 3rd year electrical engineer student at UCLA ) and his Tesla coil; The coil which puts out 500K volts, yes 500,000v ! (and it plays music). Jose, another former student in the chain-mail suit: Kids in the Faraday Cage; we all wore our quartz watches with no ill effects being near the field: lol I know good parenting,but he said it was safe...they had just made it.
It's not a bug zapper...it's a cat zapper! Just remeber to turn it off before you go out in the back yard in the morning.