Don't put the bookcase too close to the window. Because the bookcase is too close to the window, many books are eaten by insects. If the bookcase is too close to the window, in rainy days, rain may float in from the window and then drip on the books. Once books are wet, they are particularly vulnerable to insects, so the bookcase is best not to be placed too close to the window. Important books are devoted to life. If you want to prevent books from being eaten by insects, those books that are particularly important must be specially placed. For example, for some older books or some paintings and calligraphy. It is best to put it in a box specially, and then put some insect-proof pills in the box. This can effectively prevent books from being eaten by insects.

1. Vanilla, also called Qilixiang. This plant has a strong pungent smell, and its flowers and leaves are fragrant and sandwiched in the pages, which has an obvious effect of expelling bookworms.

2. Lingxiang, also known as lavender and Lingxiang, is a specialty of Guangxi Province. "Lingxiang" has been used as a valuable perfume for smoking clothes, leaving fragrance and purifying the air since ancient times. It is also the secret of insect prevention and insect repellent, and is used for the preservation of precious books, calligraphy and painting, and fabrics.

3. Camphor prevents insects. The use of camphor to prevent insects has a long history in China. In the Ming Dynasty, Cao Zhao recorded in On Gegu that "camphor is also good at preventing insects". Camphor essence produced by chemical technology in modern society is an essential oil obtained by steam distillation of camphor sawdust, which is white crystal, has a special aroma and is volatile at room temperature. Camphor pest control method has existed since ancient times and is still the main method adopted by most ancient book collection units and private collectors.