there was that TV show (OK, so maybe not at all based on reality...who knows, I don't) but they put a piece of bacon on the guy that had some maggots too deep inside him to easily pull out. They left the bacon on the wound for maybe 20 minutes and then gently pulled up the bacon, the maggots had left the guy's flesh and attached themselves to the bacon.
that might work better than vinegar or bleach which will upset them and maybe, instead of getting them to die or let go and fall off, will make them burrow deeper into the flesh to run away.
Totally guessing though.....I have no experience with this