Bittervines are exotic species that caused serious damage to the eco system in Taiwan. Although it is hard to get rid of them, they can be made into mosquito repellents for Forcipomyia taiwana (a type of mosquito in taiwan). However, some of the communities dispose them directly, which is considered as a waste. In order to make good use of the disposed Bittervines, we aim to design a mosquito repellent maker that can be placed around communities or offices.