Bed bugs, the small, blood-feeding insects that thrive in human dwellings, have plagued humanity for centuries. But in recent years, Pennsylvania cities have witnessed a significant resurgence of these pests. These nocturnal creatures, flat and reddish-brown in color, hide in mattresses, furniture cracks, and baseboards, emerging at night to feed on unsuspecting sleepers. Their bites cause itchy welts, disrupt sleep patterns, and can lead to anxiety and psychological distress for residents.