The present invention relates to be fit to the appetite of wooden rotten pest species and be the composite of desinsection to pest species, this composite can be used for pesticide applicator (110) and can be used as the wood substitutes of structural detail of the destruction of the rotten insect of anti-wood.Described composite comprises foodstuff and the insecticide of thermoplastic polymer, insect.The following formation of described composite: heat of mixing thermoplastic polymer, wood chip or other cellulosic materials and some insecticides, in blender, mixing roll, extruder etc., make melted material thereafter.Described melted material is extruded or is molded to form required shape.