Mothballs are divided into natural mothballs and synthetic mothballs. Natural mothballs are smooth, colorless or white crystals with a scent that will float in the water. Natural mothballs, which are used for insect control, mothproofing and mildew prevention, are also known as scented beads. Natural mothballs such as scented moth balls are originally aromatic compounds extracted from the leaves of eucalyptus. Also used in pharmaceuticals, spices, etc., used as a cardiotonic medicine in medicine. Synthetic mothballs such as naphthalene tablets are an organic compound. Most of the mothballs containing naphthalene are white, pungent and sinking in water. Oxygen packets for food storage are used to prevent deterioration of foods caused by microbial growth during storage and distribution, or due to poor storage and sales conditions, inferior quality of foods, and decreased color, in order to improve the shelf life and extend the value of food.