Yellowjacket Control in San Antonio, TX

San Antonio residents usually notice yellowjackets in one of two ways: small, shiny black-and-yellow wasps hovering over trash cans and patio food in late summer, or a steady line of them flying in and out of a hole in the lawn or a crack in a wall. Don't block the hole or pour anything into it; mark the spot, keep people away and get the colony treated. Call or text (210) 281-1064 or book online.

Yellowjackets do well in big cities #

AgriLife's Field Guide calls the southern yellowjacket abundant in urban areas, with nests in yards and along roadsides that are most often underground and occasionally inside wall voids (AgriLife Field Guide). A Bexar County city of more than 1.5 million people, as the Census Bureau's 2024 estimate counts San Antonio, offers everything they want: soft soil in beds and lawns, old rodent burrows, sheds and stored furniture, and a steady supply of food scraps.

Look for nests in:

• lawns, flower beds and slopes, often in an abandoned rodent hole;
• gaps in siding or brick that open into a wall;
• sheds, garages and porches;
• old couches, boxes and other things left outside.

Apartments, shared dumpsters and common walls #

Not every San Antonio yellowjacket problem is in a private yard. In ZIP code 78240, Census survey data show that 52.1% of housing units sit in buildings with five or more units (Census ACS). In complexes like these, foraging yellowjackets gather at shared dumpsters and trash corrals, and a colony in one wall void can affect several units.

If you rent, report a nest to your property manager quickly and tell neighbors which door or wall it's near. Managers can follow AgriLife's school pest advice, which works just as well for apartment grounds: keep trash containers closed, empty them often, and seal gaps in walls and eaves (Texas School IPM).

Is it a yellowjacket, or something else? #

• Yellowjacket: about 1/2 inch, black and yellow, smooth and shiny with no fuzz. It carries no pollen. The nest is a paper carton hidden underground or in a wall, with one entrance.
• Honey bee: fuzzy and brownish, often with pollen on its legs; it builds wax comb. See honey bees.
• Paper wasp: longer and slimmer, with an open comb under an eave.
• "Hornet": people often use the word for yellowjackets. A very large orange wasp in spring is likely a yellowjacket queen.

The yellowjacket guide explains the life cycle in more detail.

Why fall is the touchy season #

Queens that survived the winter start new colonies in spring. AgriLife's E-239 says colonies peak around August and September and produce new queens and males in October and November. Foraging workers can be aggressive in fall, and Insects in the City notes that yellowjacket nests are even more common than bee nests at that time of year. Most colonies die after the first hard frost, though in Texas, sheltered nests or mild winters can let a colony keep going and grow.

Hands off the hole #

Do:

• Flag the entrance and keep children, pets and mowers well away.
• Close and empty outdoor trash cans often during late summer and fall.
• If wasps come at you, cover your head and run to a car or building.

Don't:

• Swat, or jump into a pool to escape.
• Pour gasoline down a ground nest; it is a fire hazard and contaminates soil.
• Spray liquid into the ground; it tends to soak away without reaching the colony.
• Plug a wall entrance while the colony is alive, or the wasps may chew their way into your living space.
• Count on traps to remove a colony.

A sting causes sharp pain and swelling that usually eases within a few days, though itching can linger. Signs of anaphylaxis typically start within 20 to 30 minutes; trouble breathing or swallowing, dizziness, vomiting, rash or fainting means getting medical help fast.

How Pest Trappers handles yellowjackets in San Antonio #

AgriLife advises that established colonies be handled by professionals, and that anyone with a heart condition or venom allergy leave the job to someone else. A technician locates the entrance, works out whether the nest is in soil or inside a wall, explains the options, and uses only products labeled for that site; wall voids call for care around wiring. For apartment complexes, the visit can include common areas and trash enclosures. Pest Trappers LLC (TPCL #0887549) quotes after the inspection. The San Antonio service page lists our other local stinging insect services.

Frequently asked questions #