Boxelder Bug (Boisea trivittata)
Boxelder Bugs commonly congregate alongside homes or trees near a female Boxelder and in full view of the sun. They are identifiable by the distinct black and red coloring on their bodies (the red appearing as stripes against the black). TIP: Boxelder bugs will secrete a staining dye when crushed. If found indoors, your best bet is to remove them with a paper towel or vacuum cleaner to avoid a mess.
Outdoors near Boxelder Maple trees
Control / Prevention
Seal cracks in foundation, windows, and doors.