I find carpenter ants IN my sugar water feeders. I have ant moats, but the carpenter ants are so big that they still manage to get into the actual hummingbird feeders and they get stuck in the water and can't get out until I clean the feeders every few days. Then they go down the sink drain with hot water.
Fire ants are everywhere it seems. They are all over the school grounds where I work, too. This is the worst I have ever seen them. I don't mind the other ants. But carpenter ants and fire ants .... I do NOT like at all! I want them gone from my yard. Period.