Repellency of zerumbone identified in Cyperus rotundus rhizome and other constituents to Blattella germanica
Kyu-Sik Chang, Jin-Hwan Jeon, Gi-Hun Kim, Chang-Won Jang, Se-Jin Jeong, Young-Ran Ju & Young-Joon Ahn
Scientific reports (2017).
韓薬店で購入したハマスゲ根茎（香附子）からゴキブリ忌避成分を発見。
They got Cyperus rotundus in medicinal herb shop in Seoul, South Korea as a material and found that the components make cockroachs keeping off.