Although they don't cause damage to humans, animals or plants, most homeowners prefer not to have a boxelder bug problem. Once these bugs inhabit an indoor area, it can be difficult to get rid of them without removing them directly.
Spray them with soap
Mix two parts water with one part dish soap. Spray the boxelder bugs to kill them. You can also spray the exterior of your home to discourage entry. Monitor the area and re-spray whenever the bugs are present.
Use a vacuum with a long hose attachment to remove bugs from the home.
Remove their food and shelter sources
Silver maple and boxelder trees are common breeding grounds and feeding areas for boxelder bugs. Remove those trees to dissuade them from living on or near your property.
Seal any openings to your home
If you have any cracks or crevices, such as a windowsill for example, consider sealing them using a screen or caulk. Repair any holes through which boxelder bugs are able to enter your home.
Contact a pest specialist
A professional can spray your home and surrounding trees with a long-lasting insecticide that kills boxelder bug nymphs and also prevents them from accessing your home.