How to Get Rid of Stink Bugs in Your Home

Here is how to get rid of stink bugs: vacuum them into soapy water instead of crushing them, and seal the cracks they use to get indoors. The single most effective move is exclusion: sealing entry points in late summer, before stink bugs come inside to wait out the winter. Once they are already indoors, gentle removal plus sealing keeps their numbers down without filling your home with their signature odor.

What do stink bugs look like?

The most common home invader in much of the country is the brown marmorated stink bug, a shield-shaped insect about the size of a fingernail, mottled brown, with alternating light and dark bands on its antennae and along the edge of its abdomen. They are clumsy fliers that buzz loudly and tend to cluster on warm, sunny walls before working their way inside. Recognizing them matters because the odor they release when threatened is their main defense, which is exactly why you handle them gently rather than crushing them.

Why do stink bugs come inside?

Stink bugs are overwintering pests. As the weather cools in fall, they look for warm, sheltered places to spend the winter, and the sunny side of a house is an easy target. They slip through small gaps and then tend to reappear on warm days, including sunny days in winter and early spring when the warmth fools them into thinking it is time to come out. Because they come in to overwinter, stopping them before they enter is far easier than evicting them afterward.

How do I remove stink bugs without the smell?

The key rule is simple: do not crush them. Squishing a stink bug releases its defensive odor and can draw others. Instead:

• Use a shop vac with a few teaspoons of dish soap mixed into some water in the canister. The soapy water kills the bugs you suck up.
• Prefer a shop vac over a regular vacuum, because the odor can soak into a cloth-bag household vacuum.
• Dispose of the vacuum contents or bag promptly, since dead stink bugs leave a smelly residue.
• Alternatively, sweep or coax them into a container of soapy water by hand.

How do I seal entry points?

Exclusion is where you win the battle. Inspect the outside of your home on a dry day and seal the gaps stink bugs squeeze through. Work methodically around the whole exterior rather than patching one spot, because stink bugs will find any opening you miss.

• Check around siding, utility pipes, behind chimneys, and under the wood fascia.
• Seal cracks and holes with a good-quality silicone or silicone-latex caulk.
• Indoors, watch for gaps around window and door frames, electrical outlets, light switches, ceiling fans, skylights, and ceiling light fixtures.
• Repair torn window screens and add door sweeps.

Removal vs. prevention: what works best?

Does a soapy water spray help?

Yes, as a supplement. A common mix is about 4 cups of hot water with roughly three-quarters of a cup of dish soap, sprayed along cracks and potential entry points where you see bugs gathering. It is not a substitute for sealing gaps, but it helps knock down the stragglers you find around openings.

When is the best time to act?

Timing is everything with stink bugs. The best way to control them is to stop them before they enter, which means doing your exclusion work in late summer, sooner rather than later. Once cold weather pushes them toward your walls, any unsealed gap becomes an open door. If you miss that window, you can still seal gaps and remove the bugs you find, but expect to keep at it through the season and again in spring, when overwintering bugs try to get back outside and some wander into living spaces instead. Repairing screens and adding door sweeps before fall gives you a head start the following year.

Should I use insecticide sprays on stink bugs?

For most homes, exclusion and vacuuming handle the problem without reaching for pesticides, and spraying individual bugs indoors is rarely worth it. Insecticides also will not stop new bugs from entering through gaps you have not sealed, so sealing comes first. If you do use a product, choose one labeled for stink bugs or similar invaders, apply it only where the label directs (often as an exterior perimeter treatment), and follow the product label exactly. Avoid spraying inside wall voids where dead bugs could attract other pests.

Are stink bugs dangerous, and when should I call a pro?

Stink bugs are a nuisance pest. They do not bite or sting, they do not damage your home, and they are not a health threat; the main complaints are their numbers and their odor when disturbed. Call a licensed pest-control professional for large, recurring fall invasions or if you cannot find and seal the entry points yourself, especially on tall or hard-to-reach exterior walls. A pro can apply a timed exterior treatment and help with exclusion.

Frequently asked questions

Why should I not squish stink bugs?

Crushing a stink bug releases its defensive odor and can attract more. Vacuuming them into soapy water or sweeping them into a container avoids the smell.

What is the best way to remove stink bugs indoors?

Use a shop vac with a little soapy water in the canister. The soap kills the bugs that get sucked in, and a shop vac avoids the odor soaking into a cloth-bag vacuum.

How do stink bugs get into the house?

They enter through cracks and gaps around siding, utility pipes, chimneys, fascia boards, window and door frames, outlets, and light fixtures, usually in fall.

When is the best time to stink-bug-proof my home?

Late summer, before the weather cools. Sealing entry points early stops them from moving in to overwinter, which is far easier than removing them later.

Are stink bugs harmful?

No. Stink bugs are a nuisance pest. They do not bite, sting, or damage your house; the main problem is their numbers and their odor when disturbed.

When should I call a professional for stink bugs?

Call a licensed pest-control professional for large, recurring fall invasions or if you cannot locate and seal the entry points yourself.