Pest Organisms / Brown Marmorated Stink Bug
Signs
for Brown Marmorated Stink Bug
The clearest indoor sign is the bugs themselves: clusters of slow-moving adults on warm fall days, or on winter days when household heat rouses them. Source: https://extension.umn.edu/yard-and-garden-insects/brown-marmorated-stink-bug A pungent smell when one is squished or disturbed is a second giveaway, and in heavy numbers their excrement can stain surfaces. Source: https://entomology.umn.edu/brown-marmorated-stink-bug Source: https://ask.ifas.ufl.edu/publication/IN623