Quote Originally Posted by Greg'sGarters View Post
1. It doesn't matter if their bodies are resistant to it or not, it does not target them, it targets strictly the bacteria. Which will be dead

2. 1 or 2 times won't hurt it, this is a temporary treatment until the snake can go to a vet.
I don't think you understand the principle of resistant bacteria. It's the bacteria that get resistant from repeated exposure (not the snakes) to an agent intended to kill them. Most of the time you will kill all the bacteria, but with each exposure you stand a chance of one of the bacteria mutating and becoming resistant to the agent. That bacteria then flourishes and can't be killed by your first choice agent (in this case nebulised F10) and you will need to resort to a stronger agent.

As a treatment for a symptomatic illness you're correct, a couple of times won't hurt. But as a routine treatment for every snake on arrival it's exactly the situation that promotes resistant bacteria. Also consider that some of the nebulised mist will be escaping from your nebulisation chamber, this exposes bacteria in the surrounding environment to the F10 at concentrations low enough that are less than lethal, perfect for producing resistant bacteria in your snake room.

As a home treatment while you're trying to get a snake to a vet it's a great principle and one I'd use.