question about bacteria

There have been quite a few bacteria-related cures. I can't recall all of them off hand, but the most recent ones posted are acidophilus, antibacterial mouthwash (the active ingredient is much stronger than most antibacterial mouthwashes), and neosporin. What do all of these cures have in common? They all kill bad bacteria.

My question is if a bacteria-killing product does not work on someone, does it mean that person's EC is not caused by bacteria or does it mean different products target different bad bacteria (and you have to figure out which type of bacteria you have)?

I was thinking about how you need different Antibiotics for sinus infection, ear infection, etc. Tweet