Wasps and Hornets in Oklahoma City: Common Species and What to Do About Them

Paper wasps are slender, brownish-orange insects with yellow markings. They build the small, open-comb nests you typically see under porch ceilings, eaves, window frames, and inside barbecue grills or outdoor light fixtures. The nests are never enclosed in paper; you can see the individual cells directly. Each cell may hold an egg or developing larva.

Paper wasps are less aggressive than yellow jackets. They will sting if the nest is bumped or if you swat at them, but they are not inclined to chase. A small nest under an eave that is not near a door or high-traffic area can sometimes be left alone. If the nest is in a location where people regularly pass, removal is the safer call.

Yellow jackets are stockier than paper wasps, with sharper black-and-yellow banding. In Oklahoma they nest in two main locations: in the ground in abandoned rodent burrows or loose soil, and inside wall voids, attic spaces, and the cavities of old wooden structures. Ground nests are a hazard for anyone mowing, and wall-void nests become obvious when you hear buzzing inside a wall or see a steady stream of insects entering a gap in the siding.

Yellow jackets are the most defensive stinging insect common to the OKC area. They release alarm pheromones when the nest is threatened and recruit other colony members to sting. A ground nest disturbed by a lawn mower can trigger hundreds of stings in seconds. Late summer is when colonies are largest and most defensive, which is also when people most frequently encounter them while doing yard work.

Bald-faced hornets are black and white, larger than yellow jackets, and build the football-to-basketball-sized gray paper nests you see in trees, shrubs, or attached to building overhangs. The nest is fully enclosed in a papery exterior with a single entrance hole at the bottom. Colony size by midsummer is typically 400 to 700 workers.

Bald-faced hornets defend a larger perimeter around their nest than paper wasps and will pursue a perceived threat for a significant distance. A nest that is high in a tree away from foot traffic is rarely a problem. One that is in a shrub at eye level near a door or play area is a genuine hazard and should be treated professionally.

Timing matters for any nest removal. Wasps and hornets are least active at night when temperatures are cool and all colony members are in the nest. A treatment applied after dark with a residual insecticide labeled for stinging insects, directed into the nest entrance, is the standard approach for accessible nests.

Ground nests require a different method: pour or spray the insecticide directly into the entrance hole at night, then cover the entrance the following morning after confirming no activity. Do not use fire or flood approaches; fire is a hazard and flooding a ground nest rarely kills the colony. Wall-void nests typically require drilling and injection by a professional, followed by monitoring to confirm the colony has died before sealing the opening. Sealing an active wall void traps dying wasps that can then chew through interior drywall.

Ground nests larger than a grapefruit, any wall-void infestation, and bald-faced hornet nests within 15 feet of high-traffic areas are the clearest cases for professional removal. Anyone with a known allergy to insect venom should not attempt removal regardless of nest size. If you've been stung multiple times simultaneously and feel symptoms beyond the sting site, including hives, swelling of the throat, or dizziness, seek emergency care immediately.