Maize (Zea mays L.) is one of the most important cereals crop in the world both as food for man and feed for animals. However, its productions and yields in Ethiopia in particular, and Africa in general have been highly affected by an array of biotic and abiotic stresses. Among biotic constraints, insect pests are most often considered. The most important of these pests in the field and storage are Lepidopterous stalk borers and Coleopterous weevils. In Ethiopia among other things, food security has been greatly threatened by excessive post-harvest losses grains like maize by insect pests. However, less attention has been given to this crucial area (post-harvest area) over the past years compared with increment in production. The objective of this seminar review, thus is to trigger and remind researchers, policy makers and other concerned bodies towards addressing post-harvest loss reduction especially due to storage insect pests.