High temperatures combined with high humidity values create an optimal environment for insect development, causing large losses to stored cereals due to erosion and excrement. The refrigeration of the cereals below the limit temperature of life causes the hibernation of the insects present in the product. The latter cease to feed and reproduce: they become, therefore, inoffensive. Hence the convenience for the product to be chilled immediately after the harvest, thus blocking the development of insects. Refrigeration as an alternative to protective chemicals: today, chemical treatments are subject to considerable restrictions by state authorities. The use of methods such as fumigation entails high costs due to the chemicals used and the expensive process. Added to this is the progressive resistance of insects to the active ingredients at the base of the different chemical treatments.