The manner which exterminates the noxious insect is disclosed, this manner, when the surface of the noxious insect, first being the material which does not magnetize, to electric field or the magnetic field it is exposed, includes the fact that it exposes to the granular constituent which magnetically includes the grain of the polarization possible material, this grain at least is one noxious insect eliminator or conduct adjustment chemical material and relation.害虫を駆除する方法が開示され、この方法は、害虫の表面を、最初は磁化されていない材料であって電界または磁界にさらされると磁気的に分極可能な材料の粒子を含む粒状組成物にさらすことを含み、この粒子は、少なくとも1つの害虫駆除剤または行動修正化学物質と関連がある。