I use a GB-4000, both hands and foot pads. For jock-itch frequency 469 works. I had to do it for 4hours, and an hour every few days after that and it seem to go away (i had a really bad case thanks to Antibiotic soap). If it comes back i just use that frequency again (it might even work on candida cause they're related, but i'm not sure).
For UTI's you have to do the following frequency's for about an 30min to an hour each:
16349
324
882.4
646.3

Chemtrails are causing people to get a lot of UTI's lately and these frequencys will get rid of them. Many new diseases are being created everyday so to keep up with what frequency work is becoming impossible. I know someone who does muscle testing for frequencys so I know exactly what to do. I recommend everyone on here also find someone who does testing for frequencys it will make things a lot easier. If you know what the right frequency it will work everytime, if not then it will never work.