Such as grass, also known as Qilixiang. This plant has a strong smell, and its flowers and leaves smell very fragrant, sandwiched between two pages of books, which has the effect of fighting bookworms. Lingxiang, also known as lavender, is a specialty of Guangxi. Since ancient times, "Lingxiang" has been used as a valuable perfume to fumigate clothes and purify the air, and as a secret recipe to repel insects and mosquitoes, protecting precious books, calligraphy and paintings and textiles.
Camphor. The use of camphor has a long history in China. There was a book about pest control and camphor tree in Ming Dynasty. Camphor essential oil produced by chemical method in modern society is obtained by steam distillation of eucalyptus, which is white crystal, has special fragrance and is volatile at room temperature. The method of camphor tree pest control has been expanding since ancient times, and it is still the main method used by most ancient collectors and individual collectors.
Ancient books are collected on bookshelves or bookshelves made of camphor trees. The smell of Cinnamomum camphora can effectively prevent the growth of bookworms and has a good insect repellent effect. The method of using low temperature is to repel mosquitoes at low temperature. If it is frozen at MINUS 40 degrees Celsius for 48 hours, mites will freeze to death, even undeveloped insects will not be spared. Putting some tobacco leaves on the leaves of books can not only prevent the counterfeiting of mites, but also play a role in repelling insects. The room where books are stored should be ventilated frequently and cleaned frequently to reduce humidity and prevent the reproduction of harmful organisms.
You can also often take books out to dry, ventilate and bask in the sun.