The search for and application of less harmful and environmentally-friendly control measures against pest organisms are general trends in agriculture and insofar in stored-product protection. As a consequence, new approaches and more alternatives for conventional chemical pesticides combined with a professional integrated pest management shall be developed. Several biologically-based strategies to protect stored plant products from infestation are known and to some extent already in use, but they still need to be further optimized for a more effective implementation into practice. This includes the use of semiochemicals for the monitoring and control of pest populations and also, the release of natural enemies of stored-product pests (i.e. parasitoids) as biological control agents. This chapter gives an overview of the current knowledge about these two alternative control strategies and discusses possibilities how to increase their efficacy or improve the control of insects infesting stored products by combining different approaches.