The Eva-Dry Hi-Capacity Renewable Dehumidifier uses advanced non-toxic crystallized desiccant technology to efficiently absorb 4-6 oz of moisture from the air without leaks or spills.Eva-Dry Hi-Capacity Renewable DehumidifierAbsorbs 4-6 oz of moisture capacityNon-toxic crystallized desiccant technologyColor-changing moisture indicator beads (orange to green)Rechargeable design - renew for 10-12 hoursUp to 10 years of repeated usePerfect for safes and security storageIdeal for protecting valuables in safes gun cabinets and security storage areas from moisture damage. The convenient indicator system shows when renewal is needed making maintenance simple and reliable.