Since I don't QT anything, I unfortunately had been fighting it for a couple months.
I bought focus and metro, mixed with food as directed and treated for an entire month. That month ended on the 1st of March and I've seen no indications that it's back. I'm thinking that in 7 days of stopping treatment, I would have seen something already so it seems to have worked.
Some people say it works, some say it doesn't, but personally, if you treat every single day like you're supposed to, I don't see how it wont work. It's too early to tell but I haven't seen a spot, but you're supposed to wait 30 days and observe, then treat again if you see it.