Peppermint contains peppermint oil, menthol and menthone, which is easy to disperse and can repel mosquitoes, including flies, to a certain extent. It is widely used in medicine for expelling wind, preventing corrosion, diminishing inflammation, relieving pain, relieving itching and invigorating stomach. The most important feature of citronella is insect repellent. Contains insect repellent essential oil, which is harmless to human body and has a warm smell. Indoor fragrant incense can be used as insect repellent, which is most suitable for spraying or incense in summer, and can also purify and boost pressure. Warm herbal flavor makes people full of pure and natural aromatic environment, as if they were on the top of Miscanthus, which can purify and boost their mood and resolve their troubles.