Brown marmorated stink bugs (BMSB) were first identified in Portland in 2004.  These invasive stink bugs were first identified in 1998 in eastern US where, for the past several years, they have been very serious pests of agriculture and gardens. During the off-season, they are known across the country as nuisance insects indoors.  Management and control of BMSB is a high priority issue across the country.

Current recommendations:

- Throughout the growing season, the public should eradicate eggs, nymphs (youngsters), and adults on sight.  Cultural methods are suggested: Crush and/or flick into soapy water.  Don’t use pesticides as most are ineffective.

- During the fall and winter, BMSB are considered to be a nuisance because they enter structures. The good news is that they don’t feed or breed indoors.  Again, the preferred remedy is to physically remove them, by hand or with a wet-dry shop vac.  Avoid sprays indoors for several reasons: First, for human safety; second, they are ineffective.

- The key to keeping most BMSB outdoors is to caulk and seal any cracks, crevices and other openings in the interior of the house.  Wait until July to do the same for potential entryways on the exterior.

You’ll find lots more information about BMSB at http://horticulture.oregonstate.edu/group/brown-marmorated-stink-bug-oregon and at http://www.stopbmsb.org/index.cfm.

Please report your infestation at this link so that researchers in Oregon can track where BMSB are creating problems: http://horticulture.oregonstate.edu/content/report-brown-marmorated-stinkbug