PURPOSE: A pest control vaporizing material containing a carrier coated with a polyalkylene terephthalate layer supporting a solution of a compound and having an opening is provided. It has the extended vaporization time of effective components, the end point of effective components coinside with the change of the vaporizing material. CONSTITUTION: The pest control vaporizing material contains a carrier coated with a polyalkylene terephthalate layer which supports a solution of a compound represented by the formula 1 and has an opening. The carrier is the laminated material of a modified layer to become transparent when containing the base layer and an oily liquid. The polyalkylene terephthalate layer has a thickness of 0.002 to 0.3mm. In formula, R1 and R2 are independently H, methyl or Cl, R3 is H, F, methyl, methoxy or methoxymethyl. The opening is provided to the side which faces the modified layer.
