Canada is the largest producer of high protein milling wheat in the world although it is only the seventh largest wheat producing country (Agriculture and Agri-Food Canada 2004). Maintaining quality and quantity are the main criteria for safe storage. Canada has a zero tolerance for insects in stored-grain for human consumption (Canada Grain Act 1975). It is estimated that annual losses of cereal grains due to insects and rodents are about 10% in North America and 30% in Africa and Asia, but higher losses and contamination often occur locally (Hill 1990). Since losses of grain due to insect infestation are very high, disinfestation of grain is important for its safe storage