Sorry, when I posted the response about what you meant about Rife, I did not mean to be critical. I was just trying to find out if you were excluding contact devices even if they were based on rife frequencies.
Almost no one today has access to the actual true Rife machine. The great majority of Rife units are contact devices that use specific frequencies to affect specific organisms. Most of the top end ParaZapper products qualify as Rife devices in that respect.