Sabita Ranabhat, a master’s student (left), and Xiaodan Pan, a Ph.D. student (right) at Rutgers University, examine a sticky trap in a study of nuisance arthropods. The study found that, of 1.587 apartments in New Jersey sampled with sticky traps, 42 percent contained nuisance arthropods. Flies were the group most prevalent in the traps, followed in turn by beetles, spiders, ants, booklice, and “other.” (Photo courtesy of Changlu Wang, Ph.D).