Put a certain amount of insect repellent such as camphor essence or vanilla in the cabinet where books are stored. Generally, each layer should be put with 1 ~ 2 camphor essence, which can control pests.

Insects can use this method: old books are easily damaged by insects if they are not well protected. If books are infected with insects, wrap them in plastic bags and put them in the refrigerator 12 hours or so, moths will freeze to death. If you soak a book in water, whether it is dried in the shade or in the sun, the paper will wrinkle and yellow easily. At this time, if the soaked handwriting is smoothed and frozen in the refrigerator for two days, the book can be restored to its original state. In addition, first clean the old books with alcohol balls, then put them in plastic bags and freeze them in the refrigerator for two days, which can not only sterilize, but also wipe off dirt and smooth the old books as new. Wine is the fragrance of old age, so is a good book.