Soil mounds in open areas
- Color
- Reddish brown, darker abdomen
- Size
- Workers about 2.4–6 mm
- Key Markings
- Different-sized workers
- Activity
- Defends disturbed colonies
- Common Areas
- Lawns, soil, landscape beds
Description
Solenopsis invicta
Red imported fire ants build soil nests and forage for a variety of foods, including insects. A colony contains workers of different sizes. Mounds may be noticeable after rain, but a nest is not always obvious. Their development includes egg, larva, pupa, and adult stages.
Ants develop through complete metamorphosis: egg, larva, pupa, and adult. Workers support the developing colony; visible foragers are only part of it.
What Attracts Them?
- Open soil and landscaped areas
- Insects and other food sources
- Favorable nesting conditions
How Do They Get Inside?
- Foraging across foundations
- Openings near ground level
- Infested soil or plant materials
Signs of an Infestation
Many ants responding to disturbance
Workers of different sizes
Repeated activity near lawn edges
How Serious or Harmful Are They?
Fire ants can sting repeatedly when their colony is disturbed. Keep children and pets away from active mounds. Stings can cause serious allergic reactions; seek urgent medical help for a severe reaction.
Treatment / How to Get Rid of Them
What You Can Do
- Keep people and pets away from active mounds
- Avoid disturbing or testing a nest
- Record mound locations for inspection
- Discuss a colony-based management plan
Assess — We inspect your property, identify pests and activity, locate nesting and hiding areas, and find contributing conditions.
Communicate — We explain our findings, discuss the recommended plan, answer your questions, and confirm understanding and agreement.
Treat — We put the agreed plan into action, perform the initial treatment, provide ongoing service, and monitor results to adjust as needed.
Frequently Asked Questions
What should I look for first?
Different-sized workers. Soil mounds in open areas. A clear photograph and the location of activity can help with identification.
What conditions should I check?
Start with open soil and landscaped areas. Keep people and pets away from active mounds.
Does seeing one mean there is an infestation?
A single sighting does not establish the extent of a problem. Repeated activity, developing young, nests, or other evidence help us determine what is happening.
How does Pest Guys decide what to do?
We use A-C-T: Assess, Communicate, Treat. The pest, its location, and the conditions at your home guide the recommendation. We explain the plan and any preparation needed before service.
Comparisons With Similar Pests
Need help identifying a pest?
Tell us what you’re seeing. We’ll help determine the next step.






