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.
(Web Mistress Note: A little license was taken with title and some emphasis. However, the content is correct as it appears in "The Best Control)