A: Vapaguard Pads and Tabs work by releasing Vapor Phase Corrosion Inhibitors (VPCIs) into the surrounding air inside an enclosure. These vapor molecules spread throughout the enclosed space and bond to metal surfaces, forming a thin, invisible protective layer. This layer prevents moisture, oxygen, and other corrosive agents from reacting with the metal, even in hard-to-reach areas like connectors, plugs, and sockets. The result is reliable, long-term protection against rust and corrosion without direct contact or messy coatings.