The fact is, fire ants live deep underground enjoying their home, called the colony year round.
The temperature and the moisture level is just right for every day living...while up at ground level, here in the south, it is is hot and not fun to go out and look for food. In essence they stay indoors and enjoy the air conditioning.
But then the rains come... which lowers the temperature and changes the humidity and that is the signal...time for every fire ant worth their salt to do something...starting as soon as the rain stops...on behalf of the colony...that is build a new "nursery for the kids".
So the fire ants all together build...and then move the queen and her eggs upward into areas in these brand new mounds which function as a new "nursery" with just the right amount of heat and humidity.
If you stomp or cut the top off the new mound and stand back to prevent getting one or more of those nasty bites, you can watch as gazillions of fire ants come out quickly to protect their new mound and its queen and little ones. You can watch the fire ants grab the eggs and move them underground away from that bad person that attacked their home and their renovated nursery.
TIP: ITS PEST CONTROL TIME: This is the time for you to deliver the killer stuff...if you want...because they are most likely to pick up your toxic bait and deliver it to the food storage area... where every fire ant in the colony feeds daily.
If you want to know more about fire ants and how to get rid of them, click here.