Pyripoxyfen, also known as mirab and pyriproxyfen, is a new type of insect growth regulator. It was successfully developed by Sumitomo Chemical Industry Co., Ltd. of Japan. It acts as a juvenile hormone of insects and can inhibit the pupation of mosquitoes and fly larvae. And emergence. When mosquitoes and fly larvae come into contact with the agent, they basically die in the pupal stage and cannot emerge. The medicine lasts for about 1 month, is convenient to use, has no peculiar smell, and is a better anti-mosquito and fly medicine.