I don’t know much about these insects, only that they are called Stink Bugs - at least around here. We are also told that they originated from Asia, are invasive pests, they smell bad, have the ability to stain a white wall yellow if you upset/kill them, and that they like to roost over the winter, so they invade houses looking for a warm place to hibernate. As you can see, they are currently invading mine. I can honestly say that I had never had this problem until about three years ago. I’m not sure what to do. They are simply overwhelming.