Stink bugs are the bane of many homeowners. They are notorious for their unpleasant odor, which can be overpowering at times. They can invade homes in large numbers and cause damage to garden plants. Understanding the enemy, such as their behavior and life cycle, can help you in your quest to eliminate them. Stink Bug Behavior Stink bugs, also known as shield bugs, are brown or green insects with a distinctive shield-like shape.