PROBLEM TO BE SOLVED: To provide an insect pest repellent that is excellent in safety and has a high insect pest repellent effect.SOLUTION: Provided is an insect pest repellent containing 4-hydroxybenzoic acid long chain ester represented by the following formula (1) (n represents an integer of 9 to 19).SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】安全性に優れるとともに、害虫忌避効果が高い害虫忌避剤を提供する。【解決手段】式(1)【化1】(nは9~19の整数を示す)で表される4-ヒドロキシ安息香酸長鎖エステルを含む害虫忌避剤。【選択図】なし