Central Texas Pest Library
Fire Ants in Central Texas
Fire ants are one of the most common yard pests in Central Texas. They build visible mounds, sting aggressively when disturbed, and can return after rain, heat, or lawn activity.
In Central Texas, fire ants are not just a nuisance. They can make yards harder to enjoy, create problems around pets and children, and become worse after weather changes. Texas A&M AgriLife identifies fire ants as a major pest in Texas and recommends using control methods based on the setting and level of activity.
Why fire ants are so common in Central Texas
Fire ants do well in warm climates, open lawns, moist soil, turf areas, and disturbed ground. That makes Central Texas neighborhoods a strong fit for fire ant activity, especially around newer subdivisions, irrigated lawns, sidewalks, driveways, fence lines, and landscaped beds.
Mounds may appear after rain or irrigation because soil conditions become easier for ants to move and rebuild. During hot, dry periods, colonies may also shift deeper underground or move toward moisture.
Common signs of a fire ant problem
- Raised soil mounds in the yard, especially after rain
- Ants swarming when a mound is disturbed
- Painful stings around ankles, feet, or hands
- Activity near sidewalks, patios, driveways, or lawn edges
- New mounds appearing after old mounds were treated
- Ant activity around electrical boxes, irrigation covers, or landscape beds
Why treating one mound often fails
The biggest mistake homeowners make is treating only the mound they can see. Fire ant colonies can extend underground, and nearby colonies may not be affected by a single mound treatment. That is why broader yard treatment is often needed when activity keeps returning.
Texas A&M AgriLife describes fire ant control as a situation where there may not be one single “best” method. The right approach depends on the property, the level of activity, and whether the goal is quick relief, longer-term suppression, or treatment in sensitive areas.
How professional fire ant control helps
A professional pest control plan looks beyond the visible mound. The technician should inspect the yard, identify high-activity zones, check areas where people and pets spend time, and choose a treatment plan based on the property.
Yard Treatment
Used to reduce wider fire ant activity across the lawn instead of chasing one mound at a time.
Mound Treatment
Used for active mounds in high-traffic areas like patios, walkways, play areas, and fence lines.
Prevention Plan
Helps reduce recurring activity through ongoing monitoring and seasonal pest control service.
When fire ants are most active
Fire ant activity often increases during warmer parts of the year. In Texas, activity can be especially noticeable in spring, early summer, and again when fall conditions become favorable. Local moisture, irrigation, and lawn conditions also matter.
What homeowners can do
- Avoid disturbing active mounds
- Keep children and pets away from visible mounds
- Do not rely only on store-bought sprays for recurring problems
- Watch for new mounds after rain or irrigation
- Keep lawn edges, patios, and foundation areas monitored
- Schedule service when mounds keep returning
Sources and local pest guidance
This page references fire ant guidance from Texas A&M AgriLife Extension and local pest control conditions seen across Central Texas properties.
Last updated: June 2026
Fire Ant FAQ
Are fire ants dangerous?
Fire ants can sting aggressively when disturbed. For most people, stings are painful and irritating. For people with allergic reactions, fire ant stings can be more serious.
Why do fire ant mounds show up after rain?
Rain and irrigation can make soil easier for fire ants to move through. That is why mounds often become more visible after wet weather.
Can fire ants get inside the house?
Fire ants are usually outdoor pests, but they can move indoors in some situations, especially when searching for food, moisture, or shelter during weather changes.
Is DIY fire ant treatment enough?
DIY treatment may help with a visible mound, but recurring activity usually needs a broader plan. If new mounds keep appearing, the issue is likely larger than one mound.
How often should fire ant control be done?
That depends on the property, pressure level, and season. Many Central Texas homes benefit from recurring pest control because fire ants and other pests can return throughout the year.