<；P>；PROBLEM TO BE SOLVED: To provide a device for controlling pest capable of using a multiple number of medicine-holding bodies having different volatilization-lasting times of the pest-controlling components with a single device by enabling the change of the battery life of the device for controlling the pest according to the volatilization-lasting time of the set medicine-holding body, and also thereby to provide the device for controlling the pest, excellent in handling property, always capable of maintaining the device for controlling the pest as a proper state and suitable for making it a carrying type. <；P>；SOLUTION: This device for controlling the pest is provided in that a selecting means 25a of the medicine-holding body 20 selects the resistance value of an electric circuit 30 of the device for controlling the pest 10 in accordance with the impregnated amount of the pest-controlling component which is impregnated in the medicine-holding body 20, changes the lasting time of the battery 32 in accordance with the volatilization-lasting time of the pest-controlling component. <；P>；COPYRIGHT: (C)2008,JPO&INPIT
