By noticing an insect pest repellent in the form of a powder-type product, provided is an alcohol-free powdery insect pest repellent composition that has an excellent insect pest repellant effect and a high safety to humans and animals and, moreover, gives a satisfactory sense of use and shows a long persistence. The powdery insect pest repellent composition comprises an insect pest repellant comprising, as an active ingredient, at least one member selected from the group consisting of deet, ethyl 3-(N-n-butyl-N-acetyl)aminopropionate and icaridin, an irritation-mitigating agent comprising a glycol-type solvent as an active ingredient, a moisture-retaining agent comprising talc as an active ingredient, and an oil absorbent comprising a silicic acid compound as an active ingredient, wherein the ratio (a:b) by weight of the content (a) of the moisture-retaining agent to the content (b) of the oil absorbent is from 3:1 to 20:1.作為害蟲忌避製品的形態是著眼於粉末式，提供一種當然害蟲忌避效果及對人體或動物的安全性優良，在使用感或持續性此點也令人滿意的無醇的粉末狀害蟲忌避組成物。一種粉末狀害蟲忌避組成物，含有：以選自於由避蚊胺、3-(N-正丁基-N-乙醯基)胺基丙酸乙酯及埃卡瑞丁所組成的群中的至少一種作為有效成分之害蟲忌避劑；以乙二醇系溶劑作為有效成分之刺激緩和劑；以滑石作為有效成分之水分保持劑；以及以矽酸化合物作為有效成分之油分吸收劑，前述水分保持劑的配合量(a)與前述油分吸收劑的配合量(b)的比(a：b)為以重量比15：1~19：1。
