BOX ELDER BUGS
About 1/2 inch in length, dull black with red marking along the edges of their wings. Nymphs may appear to be red in color.
Damage / Signs of Presence:
No significant damage is caused other than being extremely annoying to deal with.
Accidental invaders searching a place to overwinter and end up in walls of a home. They may appear throughout the winter in your home.
Prefer the leaf and seed pods of the box elder tree.
Caulking and exclusion will help but a treatment of your home will achieve the best results.