where much of the processing production machinery were located (Floors 2 and 3). These also happened to coincide with the location of some of the worse levels of sanitation observed (Floors 3, 4, 5). If pest populations concentrate on specific floors due to a failure to remove abundant food sources caused by processing, this could interfere with monitoring programs that only make observations on one floor. To improve the effectiveness of its monitoring program, Facility B could relocate the focus of theirmonitoring programto one of themid-levelfloors or expand the monitoring to include multiple floors.