With college students back on campus this school year, insect extermination company Terminix ranked the most bedbug-infested cities in the United States.Bedbugs spread by hitching rides on luggage, backpacks and clothing, and can crawl through cracks in the walls, making common spaces of dorm living extremely vulnerable to infestations.”Bedbugs go where people go, so they can be virtually anywhere,” said Rick Cooper, senior director of bedbug services at Terminix.”Bedbugs move from infested structures, whether that be hotels, airports, schools or college campuses,” he said. “They can tag along on someone’s clothes or backpack.”Terminix based its rankings on the number of requestsmore