If you find a slow-moving, shield-shaped bug with speckled brown coloring on your curtains in winter, it is likely a Brown Marmorated Stink Bug. These insects are not dangerous—they do not bite, sting, or spread disease to humans or pets. Their biggest defense is an unpleasant smell released when crushed.

One stink bug indoors does not mean your home is infested, as they do not breed inside houses. They simply enter through small openings around windows, doors, and vents to survive the cold, remaining mostly inactive until warmer days. However, if your home has many entry points, multiple bugs may gather over time.

To remove them safely, trap the bug with a cup and paper, then release it outside. A vacuum with a disposable bag also works, but empty it quickly to avoid lingering odors. Never crush them, as the smell can stick to fabrics and linger. Avoid spraying large amounts of insecticide indoors.

Prevention is the best long-term solution. Seal gaps around windows, doors, pipes, and vents with caulk or weather stripping. If stink bugs keep appearing in large numbers, a pest control professional can help. While they are unpleasant houseguests, they are generally harmless and easy to manage with simple precautions.