Vacuum them up and empty the vacuum bag or canister outdoors immediately
Sweep or brush them into a container and dispose of them outside
Spray them directly with soapy water
Use a labeled insecticide for boxelder bugs on exterior entry points
Seal cracks, gaps, and openings around windows, doors, siding, and vents
Remove boxelder, maple, and ash seeds and debris near the home
Trim vegetation and keep firewood, leaf litter, and clutter away from the house
Install or repair window screens and door sweeps
Use a shop vacuum or handheld vacuum for large indoor infestations
Call a licensed pest control professional for heavy infestations