Yes. Rust Bullet protects metal from direct contact with magnesium chloride. Magnesium chloride is used as a deicer on roads in many states. It is very corrosive and will cause significant damage to concrete and metal. A very high concentration of magnesium chloride on a frequent basis will reduce the protective properties of any corrosion control coating, including Rust Bullet. Rust Bullet with its armor-tuff coating will last longer and provide better protection than any other product available. A dry film thickness (DFT) of 12 -15 mils or four to five coats is recommended for surfaces exposed to magnesium chloride. Regular inspection of the surface to identify breaches in the coating for immediate and easy repair is recommended.