Why is is important for a car to be dry and clean before being treated with a rust proofing product?

It is important for a car to be dry and clean before applying a rust proofing product because moisture and contaminants can prevent proper adhesion of the treatment. Any dirt, oil, or water present can create barriers that trap moisture, leading to ineffective protection and potential rust formation. A clean surface ensures that the rust proofing product can bond effectively to the metal, providing optimal protection against corrosion. Additionally, a dry surface helps the product to cure properly, enhancing its longevity and effectiveness.