Folks that live in sections of the US and all of Canada, who have no experience with Fireants cannot begin to imagine the havoc these little nasties can/do cause.
When Fireants invade new territory the first thing they do is kill all/most of the other ants.
In a flood we had a couple of years back I was on the river with the DNR agent. We saw this 'ball' floating down the river and went in the boat to get it out. As we got closer we noticed the 'ball' was ALIVE. It was actuall a 'ball' of Fireants continually moving on one-another so that as some were below the water others were above the water. There must have been close to a million or more ants in that one 'ball.' (Think the size of a basketball).
Fireants are smart. They are survivors. They a wickedly mean. I've seen folks get bitten and need an Epi-pen within a couple of minutes!
They not only kill chicks, but if a large chicken gets sick and down they will literally eat that chicken alive.
Don't mean to sound negative but the DE/no ants was a fluke.