This biopesticide made from F. gigantae plant extract. It is a water dispersible granule made from the crushed broken rice. The weight of 1 granule equivalent to the weight of 1 paddy seed, thus it can be applied into the paddy field during the seed sowing process using mechanized sprayer. The application of GASbuster at 3kg/ha may kills 95% of GAS population, without harming the environment.