How to Get Rid of Stink Bugs | Seal, Vacuum, Repeat

Get rid of stink bugs by sealing cracks, vacuuming any that get inside, and using a trap or exterior treatment as a backstop.

Stink bugs find their way into U.S. homes every fall, drawn by warmth and light. The reliable fix for getting rid of stink bugs isn’t a spray — it’s closing the gaps they use to get in. Pest specialists at Penn State Extension and the EPA agree that sealing entry points is the most effective long-term strategy, with vacuuming and trapping handling the ones already inside.

The Best Stink Bug Prevention Steps

Stink bugs slip through surprisingly small openings. Sealing these entry points keeps new bugs out and is the foundation of any control plan. Walk the outside of your home and focus on these areas:

• Caulk cracks around windows, doors, siding, and fascia boards.
• Seal gaps where utility pipes, cables, and vents enter the house, plus foundation cracks and crawlspace entries.
• Fix screens on windows and doors, replacing any with tears or holes.
• Install door sweeps and weather stripping so doors close tightly at the bottom.
• Check the chimney for a proper cap and seal any openings around it.

An hour of caulking in late summer pays off all autumn. If you want to treat the exterior perimeter, Penn State and the EPA note that applications may offer limited relief, typically done in the fall just before bugs congregate. This is best handled by a licensed pest control operator.

Once the exterior is sealed, deal with bugs already inside. If you’re weighing treatment options, our roundup of the best bug spray for stink bugs covers what actually works on contact.

Removing Stink Bugs Indoors Without the Smell

The safest way to remove stink bugs from inside your home is to vacuum them up. Use a vacuum with a hose attachment, suck up the live or dead bugs, and then empty the canister or bag promptly — the vacuum will smell afterward. Dispose of the contents in a sealed bag outside. Never crush a stink bug with your hands or a tissue; it releases a pungent odor meant to deter predators.

A simple trap can work for small numbers. Fill a wide pan with soapy water and place it under a bright light. The bugs are attracted to the light, fall into the water, and drown because the soap breaks the surface tension. Penn State and EPA sources note this can help reduce numbers indoors, though it is not a complete solution on its own.

For the bugs you can’t reach, avoid the urge to spray. If stink bugs have already settled into wall voids or your attic, Penn State Extension advises against using an insecticide after they enter these spaces — sprays simply don’t penetrate well and rarely help there.

Why Indoor Sprays Usually Fail

Indoor insecticide sprays are largely ineffective against stink bugs once they’re inside, and they carry hidden risks. Penn State’s guidance for York County notes that using pesticides inside the house is not recommended because it can attract carpet beetles that feed on textiles and other organic materials. That can create a second, worse pest problem.

What to avoid:

• Don’t rely on indoor sprays as your main strategy — they miss bugs hidden in walls.
• Don’t crush bugs when you find them; the odor is hard to remove.
• Don’t spray indiscriminately on foundations or mulch, which harms beneficial insects without solving the problem.

If you’re not certain the bugs in your home are brown marmorated stink bugs, the EPA recommends contacting your State Department of Agriculture, a University Diagnostic Laboratory, or your local Cooperative Extension Service for identification and treatment advice.

The Bottom Line on Stink Bug Control

The complete approach is straightforward: seal the house now, vacuum the few that get in, and use a targeted exterior treatment only if sealing proves difficult. This guidance applies to the brown marmorated stink bug, the common home-invading species referenced by the EPA and extension services. Skip the indoor sprays, don’t crush what you find, and the problem stays manageable year after year.