Boxelder bugs in the yard can be controlled two ways. For ground activity, apply DELTAGARD GRANULES to the turf. Next, spray over the top with CYPERMETHRIN.
To treat boxelders on trees or home siding, spray with Cypermethrin using a PUMP SPRAYER or HOSE END SPRAYER.
Once inside the home, treat cracks and crevices with PT-PHANTOM as needed.