Yes, stink bugs are present in Michigan, though they were not native to the state. The brown marmorated stink bug (Haematoloma halys), an invasive species from Asia, has established populations throughout Michigan since first being detected in the state in the early 2000s. These insects have become increasingly common, particularly in southern and central Michigan regions.
Stink bugs are most noticeable in late summer and fall when they congregate in large numbers seeking warm shelter for winter. They often invade homes, barns, and other structures, becoming a nuisance indoors. Outdoors, they feed on various crops and ornamental plants, piercing plant tissues with their needle-like mouthparts and causing damage to fruits, vegetables, and foliage.
The name "stink bug" comes from the foul-smelling chemical defense they release when threatened or crushed. This odor is particularly pronounced indoors during winter months when they gather in walls and attics.
While Michigan also has native stink bug species that have lived in the state for much longer, the invasive brown marmorated stink bug is the species that typically causes problems for homeowners and farmers. Local extension offices and agricultural resources provide guidance on identification, prevention, and management strategies for these pests. Control methods range from simple prevention techniques like sealing cracks around windows and doors to more intensive approaches for agricultural operations.