i had to dig into a fire ant nest today for what seemed like a good target but was just a big ass piece of iron. happy those poisonous bastards didn't decide to go after me.
I once turned down a good target next to where I just found some silver because it was in the middle of an ant nest. Unfortunately when I returned in the winter to dig that good target, it ended up being garbage.
Last fall I got attacked by fire ants while detecting in S. Carolina. That wasn't fun!