skin parasites-mop up?

I have a bad case of skin parasites. I am wondering if anyone has had good success with Hulda's mop up. I have tried a ton of other things and the mop-up might be for me. Does anyone know a site to get good cheap ozonated oil or an ozonator? Would it be cheaper to just buy the oil or should I but an ozonator? I don't really want an ozonator if it isn't going to work for me. Thanks

Oh, I guess I should mention that it's worms that have spread...not anything external.