“Those are stink bugs, Brown Marmorated Stink Bugs to be exact. They come into homes in the fall to spend the winter in a resting state. They come in through attic vents, cracks and crevices, down chimneys and can crawl under siding making their way inside. They do not damage, nor do they eat or mate or lay eggs. They are just hanging out during the winter in protection inside your home,” says Carol Quish of our UConn Home & Garden Education Center.
“We heat and light our houses, which sends artificial environmental signals to the bugs to come out of their winter slumber and we notice them moving about inside.”
“To keep them from coming in the fall, seal cracks and crevices, secure window screens and weather stripping around doors and windows. Screen attic vents, too. See the factsheet link for more information.”