Yellowjacket Control in Stone Oak, TX
In Stone Oak, yellowjackets are usually noticed as a steady stream of small black-and-yellow wasps diving into a hole in the lawn, a flower bed or a gap in the siding, often right after someone has run a mower nearby. Mark the spot, keep people and pets away from it, and have the nest treated rather than flooding or plugging it. Call or text (210) 281-1064, or book online.
Why does mowing stir them up? #
San Antonio's property rules ask owners to keep grass and weeds shorter than 12 inches (City of San Antonio DSD), and Stone Oak sits inside the city in north Bexar County, so most yards here get mowed regularly from spring into fall. That is exactly when yellowjacket colonies are growing in the soil.
Texas A&M AgriLife says these nests are most often underground, sometimes in an old rodent burrow, and that the vibration of a mower passing over one can set off an attack. A nest you never saw in April can hold hundreds or thousands of workers by late summer. Before the first cut of a session, walk the lawn edges, beds and slopes and watch for wasps flying low into one opening.
Why not pour gasoline down the hole? #
Because of what is under Stone Oak. The city's 2026 draft area plan says the whole plan area lies within the Edwards Aquifer Recharge Zone, and the Edwards Aquifer Authority describes the aquifer as karst, with sinkholes, caves and streams that sink into the ground (Edwards Aquifer Authority). This is where surface water feeds the aquifer.
AgriLife's school IPM plan for yellowjackets already rules out gasoline as a fire hazard that contaminates soil (Texas School IPM). Over thin soil and cracked limestone, it is an even worse idea. AgriLife's wasp bulletin adds that liquid sprays poured into a ground nest tend to soak into the soil instead of reaching the colony. A careful, targeted treatment placed in the nest itself is the sensible approach here.
Yellowjacket, honey bee or paper wasp? #
- Yellowjacket: about 1/2 inch, smooth, shiny black and yellow, clear wings, no pollen on the legs. Flies straight into a hole in the ground or a wall.
- Honey bee: fuzzy, brownish, carries pollen; colonies build wax comb in walls or trees. See bee control in Stone Oak.
- Paper wasp: longer and slimmer, legs dangling in flight, open comb under an eave.
- Big orange wasp: probably a yellowjacket queen, which AgriLife describes as large and mostly orange.
People often call yellowjackets "hornets," and the nest is a closed paper carton, but it is usually hidden underground.
Late summer and fall are the touchy months #
AgriLife says colonies peak around August and September, and new queens and males appear in October and November. AgriLife also warns that foragers can turn aggressive, especially in fall, which is when they crowd around open trash cans. Most nests die after the first hard frost. AgriLife's field guide notes that some Texas colonies survive several years and keep growing, so an active nest in winter is not impossible here.
Do and don't #
Do:
- Flag a ground nest with a stake or sign so nobody mows or steps on it.
- Keep trash cans closed and empty them often during fall.
- Seal gaps in walls and eaves once any nest inside is dead.
- If they come after you, cover your head and get into a house or car.
Don't:
- Swat, stand your ground, or jump into a pool.
- Plug a wall opening while the colony is alive; trapped wasps may chew into the house.
- Count on store traps to end a colony.
- Try any of this if someone at home has a venom allergy or a heart condition.
How Pest Trappers handles yellowjackets in Stone Oak #
The technician finds the entrance, works out whether the nest is in soil, a bed, a wall void or under a slab, and explains the options before treating. Any product goes on according to its label, aimed at the nest rather than spread across the yard. You get a price after the inspection, and the office confirms the appointment time. Pest Trappers LLC (TPCL #0887549) is a family-owned company licensed by the Texas Department of Agriculture. The yellowjacket guide has more on the life cycle, and the Stone Oak page covers other local pests.