Generally harmless to humans, Boxelder bugs are nuisance pests as they gather in large numbers on the warm walls of a home or business.
Thankfully, boxelder bugs are not known to spread disease or cause harm to humans. They can, however, stain walls, floors, and other surfaces in your home. During the fall, it is common for boxelder bugs to enter Nampa homes to find a warm place to spend the winter. This can be a nuisance as they typically congregate in large numbers. Other places boxelder bugs can be frequently found are outdoors — either in your own backyard or in public areas like Lion’s Park.