Electronic vs Chemical Sprays, The ERPS does not use toxic chemicals and can protect areas that sprays cannot reach.  Once installed there is no further expense or periodic re-application caused by wear and tear, as is often the case with chemical rust protection. The vast  majority of Company's wanting to protect their investment, have installed electronic rust proofing  for a no  mess, no nonsense protection system.

How it works - When the metal becomes exposed by a scratch or an abrasion to water & air, the iron in the metal gives up electrons to the water, changing the metal's composition and allowing oxidization / rust to form. The rust proofing system protects your vehicle by an impressed current producing negative electrolysis. Should the metal of your vehicle become exposed to the elements (paint weakness or scratch) the "field" provides the electrons sought by the water and salts that are "attacking" your vehicle, there by leaving your vehicle intact and rust free.