The Key to Successful Commercialization Controlling pests and plant diseases using biopesticides, either alone or in combination with chemical pesticides, has become an integrated pest control strategy (IPM) that is being developed in the field of sustainable agriculture throughout the world. Biopesticides are considered the safest for humans, animals, and the environment. However, the number of registered biopesticide products is still limited. One reason is that biopesticide products developed are still unstable in their effectiveness and do not meet safety requirements. Since 1988 the FAO has required clarity of the active ingredient, the origin of the active ingredient, the type of formula, toxicity, and residue as safety criteria for biopesticides. The book “BIOPESTICIDE SAFETY: The Key to Successful Commercialization”, in addition to discussing biopesticide safety testing methods, briefly describes several ways of identifying microbial biological agents, both conventionally and molecularly. Conventional identification techniques are generally easy and do not require expensive facilities. Still, the results need to be supported by molecular analysis so that the identification results are more confident. Recently, molecular microbial identification techniques have developed, and results can be obtained faster than conventional identification. We hope the book “BIOPESTICIDE SAFETY: The Key to Commercialization Success” will become one of the references in biopesticide research and development activities for more focus, therefore, the results can be utilized more widely by users. Hopefully, this book will add to the repertoire of knowledge about biopesticides, as well as spur more research and development into commercial products.