Brown Marmorated Stink Bug: What Wisconsin Homeowners Should Know

If you’ve ever opened a window or turned on a light only to be greeted by a loud-flying, smelly bug, odds are it was a brown marmorated stink bug. These shield-shaped insects have made their way into homes all across Wisconsin, especially during the cooler months.

In spite of their creepy presence, stink bugs don’t bite. But they do invade in large numbers, release a strong odor when disturbed, and can even damage your garden. Here’s what each homeowner in Wisconsin should know about classifying, stopping, and removing this seasonal pest.

What Is the Brown Marmorated Stink Bug?

The brown marmorated stink bug (Halyomorpha halys) is an invasive insect initially from Asia. It was first noticed in the U.S. in the 1990s and has since spread to much of the country including Wisconsin.
They’re around the size of a dime, with a mottled brown, shield-like body and long antennae. You’ll frequently see them gathering on warm sides of houses in late summer and fall, attempting to find a way inside to overwinter.
They aren’t hazardous to people, but they’re undeniably irritating and hard to get rid of without a plan.

Why You Should Be Concerned

While these bugs don’t bite or sting, their actual problems are:

• Damage to fruit trees and crops: They impale fruits and vegetables, making them inedible.
• Odor: When crushed or threatened, they release a strong, unkind smell.
• Home invasions: Once inside, they creep into cracks, attics, or wall voids and often recur in large numbers throughout winter and spring.

These behaviors make them a repeated issue if not properly addressed.

DIY Prevention Tips for Homeowners

You can take numerous steps to lessen your chances of a full-blown stink bug infestation:

• Seal entry points: Use caulk around windows, doors, vents, and siding gaps.
• Vacuum, don’t squash: Sucking them up avoids releasing their odor.
• Set soapy water traps: They’re attracted to light placing traps near light sources can help.
• Remove outdoor attractants: Trim overgrown vegetation and remove fallen fruit or garden debris.

Start early, ideally in late summer, before they begin seeking warmth indoors.

Why You Should Call an Insect Exterminator in WI

If stink bugs have already found their way into your home or keep coming back every fall, It’s time to call a professional insect exterminator in WI.

Here’s why it matters:
• Experts can apply safe, targeted treatments in entry areas and hiding spots.
• They use long-term prevention strategies, including perimeter sprays and sealing.
• Local exterminators understand Wisconsin’s seasonal pest patterns and can act at the right times.

Professional help not only removes current infestations but also helps prevent their return next year.

Frequently Asked Questions About Brown Marmorated Stink Bug

Do stink bugs bite?

No, they don’t bite or sting and are not harmful to humans or pets.

Why do they smell so bad?

It’s a defense mechanism. They release the odor to deter predators.

Can they harm crops in Wisconsin?

Yes, they can damage apples, beans, corn, and other produce, which impacts gardens and farms alike.

Don’t Let the Stink Settle In

The brown marmorated stink bug might be small, but it can turn out to be a big problem if disregarded. Don’t wait ’til your home is smelly.

Book a call with a qualified insect exterminator in WI today and stay stink-free this season.