Red Imported Fire Ant Control in San Antonio, TX

We treat a lot of red imported fire ant in San Antonio. Not because it's rare — because it's everywhere once the weather turns, and most pest companies still try to spray it like it's just another wasp. It's not, and doing it wrong either makes the colony defensive or leaves it right where it was. This page is the short version of how we think about it, written so you can decide whether to call us, wait it out, or handle it yourself. All three are sometimes the right answer.

Why red imported fire ant matters in San Antonio

Why red imported fire ant shows up the way it does in San Antonio specifically — as opposed to, say, Dallas or the coast — comes down to the ground, the trees, and what people have built on top of both.

The colony is rarely actually dead. Most apparent "mound death" is just temporary surface inactivity. Treatment scheduled for "active mound" periods (overcast, cool, post-rain) is dramatically more effective than treatment of dormant-looking mounds.

About the red imported fire ant

The practical issue: in our service area, what you encounter is overwhelmingly RIFA. The native fire ant species have been substantially displaced by RIFA invasion across the eastern two-thirds of Texas. If you have fire ants in San Antonio or Boerne, they are almost certainly Solenopsis invicta.

Where red imported fire ant shows up in San Antonio

Shavano Park / Hollywood Park — Established canopy, larger lots, 1960s-1980s custom homes. Carpenter bees on cedar fascia and paper wasps on high eaves.

When to act in San Antonio

San Antonio's stinging-insect cycle runs nearly year-round because winters are mild enough that structural honey bee colonies and indoor yellowjacket populations stay active:

How we treat red imported fire ant in San Antonio

What we actually do on a red imported fire ant job in San Antonio depends on three things: where the nest is, how old the building is, and what the family situation looks like. Ground nest on a lot with young kids and a dog gets treated very differently than an aerial nest in an empty guest house. We'll talk that through on site.

Drench treatments: For immediate control of individual mounds, liquid insecticide drenches deliver fast results (24-48 hours) but don't address surrounding colonies.