Bald-faced hornets are extremely defensive of their nest and will sting anyone who approaches it during the day. At night all bald-faced hornets return to their nest and sleep.
What hornets come out at night?
Worker hornets are active at night. They are attracted to lights and they may startle homeowners by flying into windows where lights are visible.
How do you keep bald-faced hornets away?
Within several days, TrapStik® should deplete the nest of enough insects that it may be safe to spray it (but again, the safest move is to call a professional). To repel bald-faced hornets, you can wear the Yellowjacket Repellent GoClip® whenever your outdoor activities may put you in contact with these insects.