Stink Bugs in the House
Stink bugs come into houses in the fall, looking for a sheltered spot to spend the winter, and they slip in through gaps around windows, doors and siding. They don't bite, breed indoors or damage the house, but they smell when crushed. In DFW, a few look-alikes turn up indoors too, and one of them, the kissing bug, matters far more.
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Why Stink Bugs Come Inside
Stink bugs are plant feeders. They spend spring and summer sucking juice from tomatoes, beans, pecans and fruit trees, then look for shelter as nights cool. A warm wall, a window frame or the space behind siding works as well as tree bark, so some of them end up in the house.
The species behind the famous indoor invasions in the eastern US is the brown marmorated stink bug, an insect from Asia. It gathers by the thousands in attics and walls back East. Texas A&M first confirmed one in Texas around 2011, in a travel trailer that came from Pennsylvania. It hasn't become the household pest here that it is in places like Pennsylvania and Maryland.
Most stink bugs inside DFW homes are native species from the garden. Texas A&M lists the southern green, brown, conchuela, harlequin and rice stink bugs among the common ones in Texas. They wander in by ones and twos rather than in swarms.
Stink Bug Look-Alikes in Texas Homes
People call several shield-shaped or long-legged bugs stink bugs. This table shows how to tell the common ones apart.
| Bug | How to recognize it | Should you worry? |
|---|---|---|
| Stink bug | Shield-shaped, about 1/2 inch, green or brown | No it's a smelly nuisance |
| Leaf-footed bug | Long, dark body with flat, leaf-shaped hind legs | No it's a garden pest that wanders in |
| Spined soldier bug | Stink bug shape with sharp points on the shoulders | No it eats caterpillars and other pests |
| Kissing bug | Cone-shaped head, long beak and orange spots ringing the abdomen | Yes don't touch it with bare hands |
The kissing bug is the one to learn. Texas A&M's kissing bug factsheet describes it as black or dark brown, 1 to 1½ inches long, with 12 orange spots around the edge of its abdomen. It feeds on blood at night and can carry the parasite that causes Chagas disease.
What to Do About a Kissing Bug
If you find a bug that looks like a kissing bug, don't crush it or pick it up bare-handed. The parasite lives in the bug's droppings, not its bite, so the risk comes from rubbing those droppings into a bite, the eyes or the mouth. Pick it up with a glove or a plastic bag and seal it in a container.
Texas A&M runs a kissing bug program that takes photos and helps identify the bug, and Texas DSHS tests bugs that may have bitten someone. Kissing bugs live near animal nests and pet resting areas, so a find near a dog bed or a woodrat nest is worth a closer look.
Getting Stink Bugs Out of the House
A vacuum is the best tool. Texas A&M's advice on fall invaders suggests slipping a nylon stocking into the vacuum hose with a rubber band, so the bugs collect in it, then releasing them outdoors. Throw out the vacuum bag afterward.
Skip the bug spray indoors. A spray kills a few bugs in the open, but bugs that die inside walls can leave a smell behind. Crushing them does the same, since the odor comes from glands that release when the bug is hurt.
Keeping Stink Bugs Out Next Fall
Prevention is all about the gaps. Before the first fall cold front, seal cracks around window and door frames, replace torn window screens and add sweeps to exterior doors. Check where cables, pipes and vents pass through the walls, and seal any opening you can see light through.
A perimeter treatment adds a second layer. Our residential pest control in DFW treats the outside of the house, where fall invaders gather before they find a way in. Homes near our Dallas office get the same quarterly service through pest control in Dallas.
Stink Bug FAQ
Do stink bugs bite?
No. Stink bugs have mouthparts made for piercing plants, not skin, and they don't sting either. The worst they'll do is leave a smell on your hands.
Do stink bugs lay eggs in houses?
No. Stink bugs lay their eggs on plants outdoors in spring and summer. The ones in your house came in to rest for the winter and will try to leave when it warms up.
Why does a stink bug smell when you kill it?
Stink bugs carry scent glands that release a strong odor whenever something crushes or threatens them. The smell is a defense that keeps birds and lizards from eating them.
When stink bugs and other fall invaders come back every year, timing matters most. Book a perimeter treatment online or over the phone, ideally before the first cold front.
