Best Treatment Windows
Spring (March–May) and fall (September–November) are the most effective treatment windows. Soil temperatures between 70–85°F trigger active foraging, which is when bait is most readily picked up and carried back to the queen.
The Two-Step Method
Step one: broadcast a slow-acting granular bait across the entire treatment area. Step two: treat individual active mounds with a contact product to reduce surface activity. The bait step targets the queen — the root of the colony.
Where Fire Ants Build
Open lawn areas after rain, edges of driveways and sidewalks, at the base of tree trunks, near A/C condenser pads, and in flowerbeds. They prefer loose, disturbed, or moist soil.
Homeowner Tips Between Treatments
Avoid disturbing mounds before bait application — disturbed colonies stop foraging temporarily. Re-inspect 48–72 hours after rain, which causes ants to rebuild and opens new mounds to treatment.
Frequently Asked Questions
When is the worst fire ant season?
Spring (April–May) is typically the peak, with a secondary spike in fall. Summer heat drives colonies deeper but doesn't eliminate them.
Why doesn't mound-only treatment work long-term?
Mound treatment kills workers but typically doesn't reach the queen, who relocates. New colonies also move in from adjacent areas.
Should fire ant service be included in quarterly pest control?
Yes. Quarterly programs that include yard-wide bait application provide the most consistent fire ant suppression.
Local Help in Central Texas
Vector 1 Pest Control treats fire ants across Williamson and Travis County. Call (512) 652-6300.