Emits a vapor the forms a corrosion/rust resistant "barrier" on metal. It's not too good to be true. A second level of protection along with your dehumidifier.
Small capsule emits an invisible vapor that forms a corrosion and rust resistant barrier on metal surfaces. Volatile Corrosion Inhibitors (VCIs) have been used for years to protect metal parts in industrial and commercial applications. One capsule protects a standard 30" wide safe for one yea