"The Dehumidifier by Barska is the perfect accessory for any safe or storage compartment where moisture-sensitive items are stored. By absorbing moisture from the surrounding air, the Barska Dehumidifier helps protect valuables from mold, mildew and corrosion. This dehumidifier is ideal for safeguarding important items that are susceptible to moisture damage, including: photos, money, passports, electronics, ammunition and countless other sensitive items. A patented color changing humidity indicator changes the dehumidifier's color from blue to pink when it is time to evaporate the moisture it has collected. This is easily done by placing the Barska Dehumidifier into a microwave for 4 minutes at 600W. The Barska Dehumidifier absorbs moisture from the air to prevent moisture damage and eliminate mildew from most storage areas. A patented color changing humidity indicator changes the dehumidifier packet from blue to pink when it is time to clear the moisture from the unit. This can be done quickly and easily by placing the Barska Dehumidifier in a microwave for 4 minutes at 600W. This premium humidifier is ideal for homes, RVs, boats, closets, ammo boxes, safes, suitcases and much more.|Patented Color Changing Humidity Indicator|Reusable Microwave-Safe Design|Filled with Moisture Absorbing Silicon Dioxide (SiO2)"