Knife Shield - Corrosion Preventive Knife CleanerRust Prevention KPL Knife Shield creates a thin film of corrosion suppressing molecules on metal surfaces. From there the formula interferes with the galvanic corrosion process by shifting corrosion potentials to more noble values, disrupting and preventing the dissolution of metal ions that is key to the chemical processes that create rust and patina. Clean Degrease Polish Tape Gunk GONE Water based & non toxic, Knife Shield instantly breaks up gummy