silica gel is a desiccant: it adsorbs and retains water vapor for optimal freshness. In leather products and food such as sausage, lack of moisture can limit mold growth and reduce deterioration. The silica gel can absorb up to 40 percent of its weight in moisture and can reduce the relative humidity in a closed container to about 40 percent.STORE: food, pet food, vitamins, seeds, medicines, nuts, meat, snacks, cookies, spices.PROTECT: firearms, ammunition, collectibles, jars, documents, camera lenses, jewelry, clothing, shoes, leather or leather goods, cosmetics, fabrics, books, travel and gym bags, decorations, herbariums.SAFE: electronic equipment, wet mobile phones, cameras, watches, musical instruments, precision meters, windshield.REGENERATIVE - Once saturated, you can remove moisture and reuse the silica gel bags by placing them in the fan oven for 0.5-2.0 hours at 95-125 C or in the microwave for about 7-12 minutes in "thaw" mode.