These are not fire ants. We (whole family is a bunch of weirdies) do study the ants. Once my then-7-year-old and I saw an "ant war" between regular little black ants, and some teensy little reddish ants. The red ants, although much smaller, must have a venomous bite, for when they bit the larger black ants, the black ants would immediately curl up and die. Fascinating!
My husband is fairly mellow about critters, but he does not like to pick a piece of fruit from our one lemon tree, and find his arm covered with crawlies. Did you know that Windex will destroy their scent trail, which is helpful in deterring ants from invading your house?????