How is that any different from probiotics or yeast? Those are also "living" but my understanding is that they are dormant and inactive until reactivated.
(Lots of good points raised in your comment, though.)
- Viruses aren't particularly stable. They're fussy little things - it's easy to deactivate them.
- How you get phage preparations is to find them where the bacteria you want to target are growing, then culture them, filter out the bacterial endotoxins (because that'll kill someone), and then use that purified preparation. That needs a lab, and one that's reasonably good at what it does, vs. a random pharmacist at Walmart.
How is that any different from probiotics or yeast? Those are also "living" but my understanding is that they are dormant and inactive until reactivated.
(Lots of good points raised in your comment, though.)