There is provided an insect pest control heat vaporizing material in which the end point of vaporization of an effective component can be visually recognized with precision and which has a prolonged period of vaporizing time of the effective component. The insect pest control heat vaporizing material has a carrier supporting a solution of a compound represented by the formula (1): wherein R"^ and R"^ independently indicate a hydrogen atom, a methyl group or a chlorine atom, and R"^ indicates a hydrogen atom, a fluorine atom, a methyl group, a methoxy group or a methoxymethyl group, thereon and being covered by a polyalkylene terephthalate layer having an opening, wherein the carrier is a laminate of a base layer and a "layer modified so as to become transparent when containing an oily liquid" and the polyalkylene terephthalate layer is 0.002 to 0.3 mm thick.
