MH recommendation for treatment of staph infection

Hi MH,

My brother has a staph infection on his arm. He has no idea where he picked it up but has been being treated by doctors for 6 weeks and it persists. I am planning to send him some oil of oregano but was wondering how many times a day you might recommend he put it on. I am assuming too he should dilute it with some olive oil, is 1:12 a good ratio for something like staph?

Thanks in advance,
Zoe