Introduction 2 Development of hermetic storage bags 3 Hermetic bags for grain storage 4 Dissemination of hermetic bags to reduce postharvest losses among smallholder farmers 5 Challenges in the use of hermetic storage bag technology 6 Case study: Purdue Improved Crop Storage (PICS) bag 7 Summary and future trends 8 Where to look for further information 9 References Chapter taken from: Maier, D. (ed.