Abstract: The provision of a lawn pesticide, its manufacturing process and pest extermination processes, that is water soluble, capable of being diluted in water, capable of being applied in concentrations appropriate to the environment of the treatment site and the development of the lawn, and can demonstrate prophylactic properties on lawns. The lawn pesticide is constituted from refined oils extracted from the botanical matter of the hinoki family and an amino acid derived surfactant solution, the two components are stirred and mixed, left to mature for at least two weeks at room temperature, and the refined oils extracted from the botanical matter of the hinoki family are uniformly dispersed in the water by the amino acid derived surfactants. The refined oils extracted from the botanical matter of the hinoki family contain substances such as hinoki thiol, which possesses antibacterial, bactericidal and insecticidal properties.