Carpenter Bee Control in San Antonio, TX
The giveaway for carpenter bees in San Antonio is a hole about half an inch across, so round it looks drilled, with a little pile of sawdust on the ground or ledge below. A big, shiny black bee hovering nearby, sometimes buzzing right at your face, confirms it. The fix has three parts: treat the active holes, plug them afterward, and paint the bare wood so the bees lose interest. Call or text (210) 281-1064 or book online for help with holes that are high, numerous or in weakened wood.
Decades of weathered wood #
AgriLife's carpenter bee bulletin says these bees go for redwood, cypress, cedar and pine, and will take on harder woods once weather and decay have softened them (AgriLife L-1826). The Texas Apiary Inspection Service lists siding, fence posts, decks and eaves as common targets, and University of Florida entomologists point to the unpainted back side of eave trim.
San Antonio has a lot of trim that has been out in the sun for a long time. Census survey data show that most homes in 78213 were built before 1980, with the 1950s the busiest decade, and about half of those in 78238 date from before 1980, largely the 1970s (Census ACS). Our own office ZIP, 78250 on the far west side, is younger, but its largest share of homes, 44.8%, went up in the 1980s. Forty years is plenty of time for paint to fail on a fascia board, a pergola or a backyard fence.
Holes tend to appear in well-lit spots that still have a roof or overhang above them: the fascia under an eave, porch beams, the top rail of a deck or a fence cap.
Is this bee going to sting me? #
Probably not. The bee that dive-bombs you near the holes is usually a male, and AgriLife is clear that males cannot sting. Females can, but only when handled or provoked, and they spend most of their time inside the wood. Penn State Extension sums it up: the most defensive carpenter bees are the ones without a stinger.
They are easy to tell from bumble bees. A carpenter bee's abdomen is shiny and mostly bare on top, with a blue-black, greenish or purplish sheen; a bumble bee is hairy all over. See bumble bees if yours is fuzzy.
Does the mild climate keep them going? #
AgriLife says adults usually come out of their tunnels in April and May, and that much of Texas sees two or more generations a year. In the warmer parts of south Texas, activity and breeding can go on all year. In practice, that means fresh holes can appear in more than one season.
Paint first, then plug #
- Paint bare wood. AgriLife rates oil-based or polyurethane paint, or pressure-treated lumber, as the most effective protection; a well-kept latex paint usually works too.
- Don't rely on stain. AgriLife calls it inadequate protection, while the University of Kentucky says it may give some repellence but is less reliable than paint (Kentucky ENTFACT-611).
- Don't plug untreated holes. New adults simply chew their way back out.
- Wait before plugging treated holes. AgriLife says 12 hours to a day; Kentucky and Florida suggest a few days.
- Metal flashing or screen is a last resort for spots you can't keep painted.
- Want to keep a few bees? AgriLife mentions a softwood nesting block in the garden as a way to host them away from the house.
When the holes add up #
One gallery averages 4 to 6 inches and can reach 12, but bees reuse and extend tunnels year after year, and AgriLife says the network can stretch more than 3 yards. Kentucky notes that holes let moisture in and invite rot. Heavy damage means replacing boards, not just plugging them.
AgriLife also points out that termites, carpenter ants and wood-boring beetles sometimes turn up during carpenter bee inspections. If the technician finds signs of those, our termite control page explains the next step.
How Pest Trappers handles carpenter bees in San Antonio #
A technician checks fascia, eaves, decks, fences, pergolas and outbuildings, counts active holes, and probes for soft wood. They explain the options, which generally means treating each active gallery with a labeled product, plugging it at the right time, and repairing or painting wood. AgriLife notes that some effective products are generally available only to pest professionals, and every application follows its label. Pest Trappers LLC (TPCL #0887549) prices the work after the inspection. More is in the carpenter bee guide and on our San Antonio service page, which covers Bexar County homes from the older north-central ZIPs to the far west side.