I'm in no way a medical expert, and can't claim to be. As I told my wife this afternoon when I was changing her dressings following some surgery, I got into computer science so I wouldn't hafta deal with the other yuckier sciences.

I'm well aware of the bacteria and other creepy crawlies living in my body.

Common sense, to me, dictates that introducing other living cultures into my body seems to be a bit dangerous and fraught with potential unintended consequences, to further clarify my "fraught with peril" comment from earlier.

So, to that end, I can't tell you from any sort of personal experience or learned knowledge whether they work. It just seems like something I wouldn't want. Irrational? Maybe.

Sorta reminds me of the old comedian standby joke: "who was the first guy to look at a cow teat and say 'we're all going to drink what comes out of THAT?'"