2. Materials and methods
2.1. Case study
Two commercial food processing facilities located in the Midwestern United States were observed for 4–5 months starting in July 2011. They were examined for 1) their apparent sanitation level based on a standardized set of criteria, 2) the effectiveness and reliability of their pest management programs using fumigation bioassays and monitoring trap capture data to compare the facilities, and 3) the financial relationship between sanitation and pest management in each facility. The facilities were of similar size, annual production level, and follow an annual calendar schedule for fumigation treatments (Table 1). Despite similarities between facilities, some differences did exist: Facility A was a newer building made of a combination concrete-sheet metal construction and situated in a rural area, while Facility B was an older building made mostly of concrete and located in a populated urban center.