Put a Glass of Salt in Your Car—Here’s Why Every Driver Should Try It

Tired of fogged-up windows, damp upholstery, or that stubborn musty smell in your car? There’s an easy solution you probably already have at home—salt.

More than just a cooking ingredient or driveway de-icer, salt can help reduce moisture inside your car. Mechanics often recommend placing a glass of salt in the vehicle to start absorbing humidity right away.

This works because salt is hygroscopic, meaning it naturally pulls moisture from the air. By lowering humidity, it helps stop condensation from forming on windows and seats.

Salt’s moisture-absorbing power also makes it great for fighting odors. Instead of masking smells like air fresheners do, it removes the damp conditions that allow mold and bacteria to thrive.

Worried your car might end up smelling like seawater? No need—salt actually improves air quality. By keeping the interior dry, it prevents the musty environment that causes unpleasant odors.

If salt isn’t your first choice, you can try other budget-friendly options. Crumpled newspaper tucked around the car can soak up excess moisture. Silica gel packets—the kind found in shoeboxes—work like mini dehumidifiers and can be placed under seats or in the glove box.

Don’t wait for humidity to cause permanent damage to your car’s interior. Whether you use salt or another alternative, keeping the inside dry will help maintain a clean, fresh, and comfortable ride—all with minimal cost and effort.