Boxelder bugs get their name from the tree that they most like to live on, the boxelder tree, though they are often found on maple and ash trees. They are about half an inch in length, and are generally black with reddish or orange markings on their backs. They will feed almost entirely on the developing seeds of boxelder, maple, and ash trees, as well as sucking on the leaves for sap. . Boxelder bugs are another pest that uses a strong smelling odor to protect themselves from predators, so they are often mistaken for stinkbugs.
Most likely they will be seen warming themselves on the sunny sides of houses, and they do not generally go inside. However if they do they can stain furniture with their excrement. Luckily they do not cause much damage to gardens unless they get into some fruits on the ground. They are known to leave scars, dimples, and deformation on fruit that they feast on.