Do They Cause Damage?
They do not cause any structural damage. Their feeding activity (primarily in Boxelder trees) can discolor or deform foliage.
Do I Have An Infestation?
Its reputation as a structural pest stems from their propensity to enter structures to overwinter. As the weather cools in the fall, large numbers of adult insects will congregate around cracks and crevices on the exterior of buildings. They will often hide in the cracks in the evening and come out to sun themselves during the day. This activity ceases as winter sets in. If we have a warm day in the winter, or as spring approaches, boxelder bugs can be found at windows and doors trying to leave their overwintering points.
What Can Masters Touch Do?
Treatment of cracks and crevices on the building exterior in the late summer and early fall can help prevent boxelder bugs from successfully entering and finding a place to overwinter. Timing of this treatment is critical to success.
How Can You Help?
Sealing cracks and crevices on the exterior, repairing window screens, screening attic vents and overall maintenance of the exterior can help prevent them from gaining access.