As you may know, traditional dehumidifiers use calcium chloride to collect moisture from the air. This unique chemical compound is known to dry out high levels of humidity, which prevents mold growth. Here’s the problem: the dangers of calcium chloride to human health are extreme and can even lead to burns in the mouth and throat.

Obviously, calcium chloride is a dangerous substance to have within your home. In fact, it can cause damage to people, pets, and even property! So, how do can you avoid the dangers of calcium chloride?

In this article, we will discuss the ins and outs of calcium chloride in traditional dehumidifiers and how silica gel dehumidifiers are a better solution for all of your humidity home problems. Let’s get started!

What is Calcium Chloride?

Also known as calcium salt, calcium chloride is a type of salt that is edible in small amounts. Typically, the substance is used in canning and pickling since it has an extremely salty flavor and can help preserve food. Calcium chloride is also used in traditional home dehumidifier systems to trap water molecules and eliminate high levels of humidity.

However, the dangers of calcium chloride are classified as severe if one is exposed to above-average levels. In fact, the chemical is an extreme irritant for the eyes, skin, and respiratory system.

the dangers of calcium chloride are severe to human health

Health Hazards of Do-It-Yourself Dehumidifiers

Some “do-it-yourself” and other powered dehumidifiers rely on fans to circulate air over calcium chloride salts. This exposes the air to minimal amounts of this chemical. Not so bad, right?

Here’s the catch: over time, long-term exposure to calcium chloride and its dust can cause lung damage, as well as other respiratory issues in the nose and throat. It can also cause skin irritation and contaminate clothing.

The dangers of calcium chloride are so extreme that The US National Library of Medicine (NIH) even strongly warns against the use of calcium salt:

“Inhalation causes irritation of nose and throat. Ingestion causes irritation of the mouth and stomach. Contact with eyes (particularly by dust) causes irritation and possible transient corneal injury. Contact of solid with dry skin causes mild irritation; strong solutions can cause marked irritation, even a superficial burn.” (source)

As you can see, dehumidifiers that use calcium chloride should not be used in the house. But, we’re not stopping there! This hazardous chemical can also destroy your property.

Don’t Use Calcium Chloride Dehumidifiers in Vehicles or Gun Safes

Listen up! This is important: calcium chloride is exceptionally corrosive to metal. Overall, the salt eats away at the metal and rusts any metal inside the safe. Therefore, you should never dehumidify your gun safe, car, or other places where metals are stored with this type of salt.

the dangers of calcium chloride can corrode your car and engine
When you leave a calcium chloride dehumidifier in your car, you’re risking your health and your engine.


For the same reason, it’s a good idea to avoid calcium chloride for boats and RVs. While many marine surfaces are resistant to corrosion, extended exposure to this chemical can present a problem.

So, what’s a simple solution? Silica gel dehumidifiers, of course!

A Safer Alternative: Silica Gel Dehumidifiers

In contrast to calcium chloride salts, silica gel is a safe dehumidifier and is an incredibly effective way to remove unwanted moisture from an environment. Here’s the best part: unlike Calcium chloride, which usually requires air to be circulated over the chemical, silica gel dehumidifiers do not need air circulation to work.

Additional Benefits of Silica Gel

You may have seen silica gel after you bought new shoes, clothes, or even received a package at home. While silica gel is not safe to eat like calcium chloride, it is much safer to inhale. Furthermore, these dehumidifiers:

  • Do not rust metal like calcium salt
  • Wick moisture from the atmosphere more effectively
  • Work with less material and fit in small spaces

And what’s more? Silica gel dehumidifiers are even reusable! Great for the environment and for your health.

Discover the Power of Mini Silica Gel Dehumidifiers

Mini dehumidifiers can be plugged into the wall and can be placed nearly anywhere without the health risks associated with calcium chloride. The added benefit is that the device removes the moisture stored in the gel so you can use it again and again.

Check out EVA-DRY Dehumidifiers and provide your home, boat, or RV with moisture control solutions that are safe and convenient. Safely fit an EVA-DRY mini dehumidifier anywhere in your home and breathe easy again.

  • EDV-1100 Petite Dehumidifier

  • EDV-365AD-CS Eva-Dry Air Dry System Bundle

  • Renewable Mini Dehumidifier E-333


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