“People in developing countries rely on burning fuels such as woods and charcoal in their daily cooking basis, either indoor or outdoor. Burning fuels release a significant amount of particulate matter in air that could lead to a series diseases and deaths. This project will evaluate a mixture of an alternative fuels “Sawdust and Steer Manure” in jiko stove, to determine the efficiency to boil water in a shortest time and to produce a least amount of particulate matter. ”