Abstract
Various pest insects （hygenic pest, stored insect, and agriculture and forestry pest insect, etc.）exist in our living environment. They invite the deterioration such as qualities such as diets on the hygiene side of the person, and become big problems. As measures, there is problems such as persistencies and safety probabilities, and the method of using an environment-friendly natural substance, for instance, the fragrance components are paid to attention though a lot of synthesized chemical substances that have an excellent control action are developed. When the plant puts the root on a part and the earth, moving cannot be taken. Therefore, the chemical substance with a high control effect and safety probability has been generated as a method for correspondence to the attack such as peripheral microbes and insects. Here, the focus will be appropriated to the chemical substance with a high insect pest control function that the plant produced to consider those use, and it outline it.
