Stink Bug Control in Roswell, GA

Brown Marmorated Stink Bugs in Roswell, Georgia

The brown marmorated stink bug (Halyomorpha halys) is an invasive species originally from East Asia, first introduced to the United States in the mid-1990s and now well established across Georgia’s Piedmont region, including Roswell and North Fulton County. It’s the dominant home-invading stink bug species in the area, displacing several native Georgia species in both prevalence and nuisance impact.

Identification & Seasonal Biology

Adults are shield-shaped, roughly half an inch to three-quarters of an inch long. The clearest distinguishing feature is the alternating light and dark banding on their antennae, which sets them apart from native stink bug species. In Georgia, the species completes two generations per year. The first matures by late July or August. The second matures in September and October, and these are the overwintering adults that attempt to enter homes.

Stink bugs feed on more than 150 ornamental plant species common in Georgia landscapes. The densely planted yards and mature trees throughout North Fulton County provide extensive outdoor foraging habitat, which is why populations build up close to homes before the fall migration begins. Once temperatures cool, those same insects start looking for a way inside.

Stink bugs don’t bite, sting, reproduce indoors, or damage your home’s structure. The problem is volume and odor: when disturbed or crushed, they release a pungent, herb-like smell that can linger. Boxelder bugs are a second overwintering pest common in the Atlanta area, frequently appearing on the same sun-warmed exterior walls in late summer and early fall.

Signs of a Stink Bug Problem & Common Entry Points

The most visible sign is clusters of insects gathering on south- and west-facing exterior walls in late summer. Stink bugs are drawn to sun-warmed surfaces, and those walls are where populations concentrate before moving inside. Indoors, you may notice insects near windows, along ceilings, or circling light fixtures. A persistent musty or herb-like odor without a visible source often means insects are already inside walls or the attic.

What you see in your living area is usually a small fraction of a larger group already in concealed spaces. Attics and crawlspaces are the primary harborage sites once stink bugs are inside a structure. A professional inspection can locate those harborage areas before the population grows through the season.

Common entry points include:

• Window and door frames: Gaps where caulking has degraded or was never applied
• Foundation and siding cracks: Small openings that insects navigate without difficulty
• Attic vents: Damaged or unscreened vents that provide direct access to primary harborage
• Utility penetrations: Gaps around pipes, conduit, and cable entry points
• Soffits and fascia: Openings beneath roofline trim where insects can access attic space

What Roswell Homeowners Can Do Before Professional Treatment

Physical exclusion measures reduce the number of entry opportunities and make professional exterior barrier treatments more effective. These steps are worth completing before fall arrives.

• Caulk gaps around windows, doors, and utility penetrations: Pay particular attention to older homes where caulking may have cracked or separated
• Repair or replace window screens and attic vent screens: Intact screening blocks one of the most common routes into attic harborage
• Install or replace weatherstripping and door sweeps: Even small gaps at door bottoms are enough for stink bugs to enter
• Pull vegetation and mulch 18 inches from the foundation: Reducing the bridge between outdoor foraging habitat and your home’s exterior cuts down on contact with entry points
• Don’t crush stink bugs indoors: The released odor can attract additional insects. Vacuum them up or capture them in a sealed container and dispose of them outside

DIY interior sprays have limited effectiveness against overwintering stink bugs. Once insects are dormant inside walls or the attic, they don’t feed on baits or cross treated surfaces. Professional exterior barrier applications timed to the pre-migration window are the more reliable approach, and they work best when combined with the physical exclusion steps above.