Download Cockroaches are problematic pests which may be viewed as a community problem. They are particularly problematic in multi-family locations such as apartments, condominiums, dormitories and other such facilities where people reside in close quarters. This is so because these pests may travel from room to room, apartment to apartment and floor to floor. Depending upon the species, cockroaches may be carried along with food, other materials or may come in from outdoors. The most commonly encountered species are the German cockroach and the American cockroach.