I tried, I really tried NOT to use poisons in my lawn to kill fire ants. At least I tried until there was an ant mound the size of a 1968 Volkswagen. Then I only used the poison in the general area. Then the colony moved to just the other side of the poison zone. I dutifully scattered just enough poison for that area. They moved to another part of the yard, then split up and covered several areas. Now I treat the whole lawn (they went to a neighbor that no one likes!).
Fire ants must all die now. Their bites make you miserable and can cause scarring. I’ll take snakes over fire ants.
I didn’t use to think there were fire ants out in the Anza-Borrego desert where I live. Or at least, if there were, I thought they stayed outside like good little ants.
Then one night, I crawled into bed and thirty seconds later vaulted screaming from it. I don’t know how it happened. I couldn’t figure out how they got in, but my bedroom carpet was crawling with the little buggers, and they had infested the space between my top sheet and comforter. When I climbed into bed, I disturbed them, and I ended up getting a bunch of bites all over my body.
My landlord - wonderful person that he is - had the pest control people out that day.