Insect populations in the Kansas State University pilot flour mill were monitored for 29 consecutive weeks, using both grain/flour and trap samples from June 2002 through January 2003. Grain samples were collected from millstreams and from residues scattered throughout the processing area. Trapping was accomplished with commercial food and pheromone-baited traps for capturing beetle adults and males of Indianmeal moth. The flour mill was subject to three heat treatments during the 7-month study period. Insect numbers captured in traps and those found in product/flour samples before and after heat treatment intervention were compared. The types and numbers of insects in traps and product samples were not consistent and varied greatly. Furthermore, insects were captured and found in product samples following each of the heat treatments. Issues and challenges in interpreting insect data with respect to heat treatment efficacy will be discussed.
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