- A Wide, Shallow Container: A small bowl, a disposable pie tin, a sturdy plastic container lid, or even a clean used yogurt cup with the top cut off. The key is having a large surface area for the salt to expose to the air.
- 1-2 Cups of Plain Salt: Inexpensive table salt, kosher salt, or even rock salt works perfectly. You are not using fancy sea salt or iodized salt for any health benefit here—you’re using it as a desiccant.
Optional but Helpful:
- A Paper Towel or Coffee Filter: To place under the salt for easier cleanup.
- A Few Drops of Essential Oil: For a fresh scent. Lavender, lemon, or cedarwood are great choices. Add it directly to the salt and stir.
Step-by-Step: Deploy Your DIY Dehumidifier
- Choose Your Spot: Select a stable, flat spot in your car where the container won’t tip over during normal driving. The footwell of a rear passenger seat or on the floor behind the center console are perfect, out-of-the-way locations. Never place it on a dashboard or driver’s seat where it could become a projectile or distraction.
- Prepare Your Container: If using, place the paper towel or coffee filter in the bottom of your container. This isn’t strictly necessary, but it makes it easier to lift out and dispose of the damp salt clumps later.
- Add the Salt: Pour your salt into the container, spreading it into an even layer. If you’re using essential oils, add a few drops and give it a quick stir.
- Let It Work: That’s it. Place the container in your chosen spot and forget about it. Your silent passenger is now on duty, pulling moisture from the air 24/7. For best results in very humid climates or during the wet season, consider placing a second smaller container in the trunk.
