Baldfaced Hornet Control in San Antonio, TX

Most of what you read online about baldfaced hornet is written by someone who's never set foot in San Antonio. The biology is roughly right, the treatment advice usually isn't — not for this soil, not for this kind of housing stock, not for the way baldfaced hornet actually nests here. Below is what we know from doing it, week in and week out. If you're short on time, skim the "where it shows up" section and call us.

Why baldfaced hornet matters in San Antonio

Before we get into treatment, here's a minute on why San Antonio has the baldfaced hornet pressure it does. It matters because it changes the timing of what we do.

Baldfaced hornets are present but not abundant in the San Antonio to Boerne corridor. They are a forest-edge species, and the less wooded parts of the region (central Bexar County, the drier western reaches) produce fewer calls than the heavily-oaked corridor communities.

About the baldfaced hornet

"Baldfaced hornet" persists as the common name because of their large size and aerial nest construction, but the formal entomological classification puts them squarely in the yellowjacket group. Texas A&M AgriLife Extension notes this explicitly: "It actually belongs to the yellowjacket family (Vespidae)" — the only "hornet" reported in Texas, and not a hornet at all.

Where baldfaced hornet shows up in San Antonio

Stone Oak / 281 N corridor (78258, 78260, 78261) — Master-planned newer construction with greenbelts and drainage easements built into the subdivisions (Edwards Aquifer recharge zone requirements). The greenbelts are exactly why Stone Oak has the heaviest yellowjacket ground-nest density in the entire metro.

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 baldfaced hornet in San Antonio

A few things we won't do: we won't spray from 20 feet and call it done, we won't sell you a six-month contract for a problem that's going to resolve in three weeks anyway, and we won't recommend treatment if what you've got is harmless. That last one happens more often than you'd think with baldfaced hornet calls in San Antonio.