Other Simple Materials That Follow the Same Principle
Salt is not the only everyday material that can be used to reduce moisture inside a vehicle. Other options work through the same basic idea of absorbing dampness from the cabin.
Crumpled newspaper placed on the floor can collect moisture from wet surfaces and humid air. It may be particularly useful when rainwater or damp footwear has left the floor area
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The paper should be removed and replaced after it becomes damp. Leaving soaked newspaper inside the car would keep moisture in the cabin rather than helping it dry.Car safety guide
Silica gel packets offer another compact option. These small packets are designed to absorb moisture and can be placed in cup holders, storage compartments, or door pockets.
Using several packets in different parts of the cabin may help target areas where dampness tends to collect. As with salt, they should be checked periodically and replaced when they are no longer effective.Choosing a Safe Location for the Container
Any loose object inside a moving vehicle should be positioned carefully. A cup of salt must not be placed where it could slide, fall near the pedals, block controls, or distract the driver.
