ZERUST^® ActivPak^® packets offer a new technology of Vapor Corrosion Inhibitor combined with Volatile Flash Corrosion Inhibitor (FCI^™). ZERUST^® ActivPak^® packets offer a new technology of Vapor Corrosion Inhibitors combined with Volatile Flash Corrosion Inhibitors (FCI^™) to protect ferrous, non-ferrous and aluminum metals in closed spaces. This combination of inhibitors assures immediate anticorrosion protection of the goods (standard VCI needs tens of minutes to be fully active while FCI is active within minutes).