Excerpts from Steve
Tvedten's book "The Best Control
(Used here with permission.)
Fire ants are tick predators - normally yards with fire ants also do not have ticks. If you have no ticks there, obviously, is less danger of disease. They also control the ground stage of horn flies.
Added by visitor: their presence in sugar cane field eliminates or reduced the need for
pesticide to treat a certain caterpillar that is a scourge to sugar cane growers - Todd Gibson