Brown Marmorated Stink Bug Invasion in West Virginia: Origin, Why Now, and Limited Control

The sudden BMSB infestation in WV (since 2013) is a new invasive species—not boxelder bugs. Native to East Asia (China, Japan, Korea), arrived in US ~1990s via shipped produce. Spreading rapidly east to west.

Why "All of a Sudden"?

• Population built locally to noticeable levels.
• No natural enemies yet.
• Ideal climate, host plants (tree of heaven, crops, ornamentals).

Control Reality

• Exclusion: Seal cracks, repair screens, door sweeps — best defense.
• Indoor: Vacuum. Don't crush (stink).
• Outdoor: No effective population control — they fly miles.
• Fall exterior spray (pyrethroid) by pro on siding, eaves, windows — reduces overwintering numbers. See BMSB guide.
• Wall void/attic dust treatment — sometimes helps.

No Silver Bullet

They're here to stay. Focus on keeping them out. Good news: harmless, don't bite, don't breed indoors.