Additional Methods You Can Combine With Salt
While salt alone is effective, combining it with a few other simple approaches will produce even better results for drivers dealing with persistent humidity problems. Silica gel packets — the small sachets labeled "Do Not Eat" that come packaged with electronics, shoes, and other moisture-sensitive products — work on the same hygroscopic principle as salt and can be placed in glove compartments, under seats, and in other enclosed spaces within the vehicle. Many silica gel products are also rechargeable: once they become saturated with moisture, you can dry them out in a low oven and reuse them repeatedly, which makes them an economical choice for long-term use alongside the salt method.
Crumpled newspaper placed on the floor of the vehicle is another old-fashioned but effective moisture-absorbing method that some drivers swear by. The paper fibers absorb moisture from wet boots, rain-soaked floor mats, and damp cargo, reducing the amount of water vapor that enters the cabin air in the first place. Baking soda placed in a breathable container can also help absorb some moisture as well as neutralize odors, though it is generally less effective than salt for heavy humidity management and works better as a complement to the salt method than as a standalone solution.
