From the economic point of view and in terms of protection of the natural resources, it is much more reasonable to protect harvested produce against loss than to invest in further increases of the agricultural production. According to investigations made by GTZ 5 to 30 % of the African maize and cassava harvest is destroyed after six to eight months of storage by stored product pests. The losses depend on the storage system and the presence of the Larger Grain Borer (LGB), which is particularly devastating. According to FAO statistics the overall production of maize in Africa is 36 million t per year. Taking into account that three quarters of the total harvest are stored at farm level, the minimum losses amount to 1.35 million t every year. Much of these losses can be prevented using integrated post-harvest protection measures. Integrated post-harvest protection on the farm level means the selection of appropriate measures according to the specific situation on every single farm. Integrated post-harvest loss prevention combines profitability with the protection of the natural resources. There are various possibilities to reduce or completely avoid the use of chemical stored product protectants. It is the task of the farmers and the extensionists to analyse the needs carefully before choosing the measures that suit them best. Criteria like simplicity, availability, cost, labour expense must always be taken into account. In this context, the extension brochure is intended to contribute to post-harvest loss reduction and to the improvement of food security.