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Gardening in Washington State

PEST WATCH: Brown Marmorated Stink Bug

The brown marmorated stink bug (BMSB) causes damage to agricultural crops and is an annoyance to homeowners.
Beginning in September, BMSB adults aggregate in large masses often on the sides of homes and other buildings. They enter structures to avoid cold weather. While stink bugs are not known to harm people or cause damage to buildings, they can be quite distressing when large numbers of individuals enter households.

Brown mamorated stink bug on holly (Todd Murray)

Brown mamorated stink bug on holly (Todd Murray)

Sealing cracks, mending screens, and screening vents mechanically exclude BMSB adults from entering houses. When aggregations begin to form, regular vacuuming of BMSB adults has helped reduce the number entering houses.
If you suspect you have BMSBs in a new region of Washington State, please collect a sample in a crush-proof container, note the date and specific location, and place it in a freezer until you can take it to your local WSU Extension office or local Master Gardener clinic.

For more information on the Brown Marmorated Stink Bug see WSU’s Pest Watch: Brown Marmorated Stink Bug FS079E.

Submitted by: Todd Murray, October 5, 2015


3 comments on “PEST WATCH: Brown Marmorated Stink Bug”

  1. aries alfajri said on October 20, 2015:

    might be worth trying. 🙂

  2. Jen said on May 9, 2018:

    The fact sheet indicates the counties where BMSB detections have been confirmed, but is dated 2012. Can you update the confirmed counties? I’m pretty sure I just caught one in my house (Seattle), but won’t send it in if you don’t need it.

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