Generally harmless to humans, Boxelder bugs are nuisance pests, as they gather in large numbers on the warm walls of a home or business.
Boxelder bugs like the sides of buildings that are directly hit by the sun. They’ll also bask on the sides of rocks and trees. Although the surrounding of Idaho City is a highly wooded area, that doesn’t necessarily mean the types of trees are a boxelder bug attractant. Boxelder bugs more likely feed on the trees planted for you landscape. Similar to the trees on Walulla St and Cottonwood St.