[tguvot]

those phages are specifically targeting staph infection. this company has a few "off the shelf" ready compounds for sale. given that parent has today problem with staph, priority I think will be to treat it with something that is available (as he is currently trying with antibiotics) and not with probiotics of specific strain that seems to be unobtanium as of now

[peatmoss]

Sure, if they have an in-stock phage that targets his particular strain of staph, why not?

But the Bacillus subtilis also appears to be readily available. I think if I were faced with a potentially life-threatening staph infection, I'd happily do all of the above: antibiotics, probiotics, and sure, phages too. The latter two seem like low risk things to try (EDIT: but I'd probably at least run the idea past my doc)