Contemporary organic waste disposing method is buried it underground which accounts for environmental hazards such as polluting the air, water and ground. The “black-solider” fly is species that does not harm humans, animals or crops. The larvae feed on non-fibrous organic waste, consuming daily 2-3 folds its own body weight. The larvae’s body mass has 35% proteins which are recycled to feed animals and comparable amount of fats which currently are not being used. The research examined using these fats in producing biodiesel fuel for two kinds of organic wastes: agriculture and animal waste. Results show production of 34 and 8.5 liters of biodiesel fuel from a ton of tomatoes waste and cow manure. The biodiesel can be used as a substitute to or as an additive for conventional diesel fuel.