moisture absorber for storage unit

4 Best Moisture Absorbers for Storage Unit in 2023

Storage units are essential for keeping our belongings safe and secure, but they can also present challenges when it comes to controlling moisture. Excess moisture in a storage unit can lead to a variety of problems, including mold growth, musty odors, and damage to your valuables. To combat these issues, it's crucial to use moisture absorbers specifically designed for storage units. In this article, we will discuss about the best moisture absorbers for storage units, their features, and how to select the right one to protect your items effectively.

The Impact of Moisture in Storage Units

Moisture is a common problem in storage units due to factors like temperature fluctuations, poor ventilation, and exposure to the elements. The consequences of excess moisture can be severe, affecting both the structural integrity of your storage unit and the condition of your belongings. Here are some of the potential issues caused by moisture in storage units:

Mold and Mildew Growth: Excess moisture creates the perfect breeding ground for mold and mildew. These can grow on various surfaces, including furniture, clothing, electronics, and documents, leading to irreversible damage.

Musty Odors: Moisture in the air can result in a musty, unpleasant odor that permeates your belongings, making them less enjoyable to use when you retrieve them.

Rust and Corrosion: Moisture can cause metal items, such as tools and machinery, to rust or corrode over time.

Paper Damage: Important documents, books, and photographs can deteriorate due to exposure to moisture.

Wood Damage: Wooden furniture, flooring, and musical instruments may warp, crack, or become discolored when exposed to high humidity.

Electronics and Appliances: Moisture can damage sensitive electronics and appliances, rendering them unusable.

To prevent these issues and protect your valuables in storage units, it's essential to use moisture absorbers. These products are designed to reduce humidity levels and maintain a dry environment, preserving the condition of your belongings.

Factors to Consider When Choosing Moisture Absorbers

When selecting a moisture absorber for your storage unit, several factors should be taken into account to ensure its effectiveness:

Coverage Area: Determine the size of your storage unit and choose a moisture absorber that can adequately cover the entire space. Manufacturers typically specify the square footage that their products can handle.

Type of Moisture Absorber: There are various types of moisture absorbers, including desiccant packs, hanging bags, and electric dehumidifiers. Consider your specific needs and the features of each type when making your selection.

Duration of Effectiveness: Different moisture absorbers have varying durations of effectiveness. Some may need frequent refilling or replacement, while others can last several months. Be sure to check the product specifications for this information.

Capacity: Capacity refers to the amount of moisture the absorber can hold before it needs to be replaced or recharged. Higher capacity is preferable, as it means the absorber can work for a more extended period before maintenance is required.

Refillability: Some moisture absorbers can be refilled, reducing long-term costs and environmental impact. Consider whether this feature is essential for your needs.

Ease of Use: Choose a moisture absorber that is easy to install and maintain. Some products require little to no effort, while others may need more hands-on attention.

Safety: Ensure that the product you choose is safe for use around your belongings and any potential exposure to pets or children. 

Packaging: Products that use calcium chloride require a lot of packaging material because the manufacturers don’t want them to leak. Clay desiccants don’t have this problem. You don’t have to keep them in several layers. In fact, some of them use environmentally friendly Kraft paper.

Moisture absorber can eradicate excess moister from the storage unit, but it can not control cockroach infestation. Cockroaches and spiders can do a lot of harm to the product of the storage unit. To keep the cockroach and other insects away, you should use a bug bomb for storage unit.

Another culprit for the storage units is rats. A rat can tear all boxes in your storage unit. To save your valuables, you need to kill all the rats in the storage unit. For this, you should use storage unit rat poison to eradicate rats from the storage unit area.

Now, let's discuss about some of the best moisture absorbers for storage units, each with its own unique features and benefits.

Top 4 Best Moisture Absorbers for Storage Unit

1). DampRid Fragrance-Free Moisture Absorber

DampRid comes in 10.5-ounce cups. You have four of them at your disposal. But they won’t stop at attracting and trapping moisture. They will also combat the terrible odors that people associate with damp conditions.

You don’t have to restrict DampRid to your storage unit. You can deploy the product in any other location vulnerable to moisture, leaks, mold, and mildew. The most obvious culprits are the bathroom and kitchen. Though, places like the gym, laundry room, and closet are just as susceptible to mold.

Four cups do not sound like a lot. But you shouldn’t underestimate the potency of this moisture absorber. Each cup can easily last 60 days. Though, depending on the temperature and humidity in your storage unit, you could deplete them at a much faster rate.

If you’ve never heard of DampRid, the bag has crystals. Pour them on the canister and wait for them to dissolve. Throw the liquid away and add more crystals. If you’ve kept your DampRid for a long time, you don’t have to panic. They won’t expire. Yes, the manufacturer printed a date on the product. But that is the date of manufacture, not the expiry date.

2). Vacplus Unscented Moisture Absorber

Like other moisture absorbers, this one keeps storage units dry by absorbing moisture from the air. It relies on calcium chloride to enlarge the absorbing area. Water will invade the calcium chloride, causing the moisture absorber to solidify. Eventually, the particles will dissolve. The resulting liquid will pool in the reservoir.

If you hate chemical solutions because of the strong smells they introduce, this product doesn’t have a fragrance. Once you apply it, you won’t even know that it’s there.

It will work in any location that is vulnerable to water and moisture, including bathrooms, basements, laundry rooms, etc. You can blame the absorber’s efficiency on the high-quality water collecting layer. Don’t expect every single absorber to offer an independent water-collecting layer.

The presence of one here sets the vacplus closet absorber apart. It also allows you to observe the dehumidification process. You don’t have to worry about the water escaping the box because you accidentally kicked it over. The locking paper prevents leaks.

3). NATRUTH Moisture Absorber

If you’re tempted to use charcoal but don’t fully trust it to function as effectively as commercial moisture absorbers, you should know that NATRUTH has activated charcoal.

It relies on charcoal to absorb odors. But that isn’t the moisture absorber’s only role. It also features spherical calcium chloride, which is responsible for enlarging the absorbing area.

A 500ml pack will keep your assets in a storage unit dry. If you look at the little boxes that contain the moisture the absorber has captured, you will see the humidity condense each day. You don’t have to wonder whether or not the moisture absorber is working.

Place it in those sections that must be dehumidified and watch as the water fills the boxes. Before you complain that the water in the containers will leak, causing the same problems it was supposed to prevent, you should know that this product uses one-way permeable paper. Leaks are not a problem.

You can use the moisture absorber in any location that has to remain dry, including basements and closets. But if you don’t like the moisture absorber, and you think it has failed to deliver on its promises, don’t be afraid to return it for a refund. It comes with a 100 percent satisfaction guarantee.

4. DampRid Moisture Absorber for storage unit

If you are looking for a High Capacity Moisture Absorber for Fresher Air in Large Spaces, The DampRid Moisture Absorber is suitable for you. This Moisture Absorber is capable of eliminating odors from damp areas.

Does your storage unit area often seem damp and musty? This moisture absorber gets rid of dampness and creates cleaner air. It is suitable for the large storage unit where the moisture level is excessively high. Additionally, you can use it in the small storage unit too.

The Moisture Absorber has Moisture Lock spill resistor technology. The spill resistor technology ensures it will not spill on your bedsheets, carpets, or clothes.

Based on the humidity levels on your storage unit, The Moisture Absorber last up to 180 days.

You can use DampRid on your storage unit by removing the plastic lid exposing the sealed safety cover. After opening the sealed safety cover DampRid starts work quickly by trapping excess moisture on your storage unit.

Does DampRid dry the air excessively that can damages plants or clothes on your storage unit? The answer is `NO’. It dries up to a certain level that is not harmful to the belongings of your storage unit.

Available in variety of types and sizes, it will cover up to 1000 Square Feet area.

What types of moisture control is best for storage units:

The best type of moisture control for storage units depends on various factors, including the size of the storage unit, its location, the climate in the area, and the specific items you're storing. Here are some common types of moisture control methods for storage units, each with its own advantages and best use cases:

Desiccant Packets: Desiccant packets contain moisture-absorbing materials, such as silica gel, which absorb excess moisture in the air. They are often used for smaller storage units or for protecting specific items within larger units. Desiccant packets are cost-effective and readily available. They're suitable for reducing humidity in enclosed spaces, preventing mold, and protecting delicate items like clothing, electronics, and documents. Some desiccant packets are also rechargeable.

Hanging Moisture Absorbers: Hanging moisture absorbers, like DampRid, are designed to be hung in a storage unit. They contain moisture-absorbing crystals and are ideal for medium-sized storage units. They are relatively easy to use and provide effective moisture control for several months. Hanging moisture absorbers are especially useful in preventing musty odors and mold growth.

Electric Dehumidifiers: Electric dehumidifiers are more powerful options suitable for larger storage units or those located in areas with high humidity. These devices continuously remove moisture from the air and typically have a built-in water collection tank. Electric dehumidifiers are low-maintenance but require access to electricity. They are particularly effective for preventing mold, rust, and other forms of moisture-related damage.

Rechargeable Moisture Absorbers: Some moisture absorbers, like certain desiccant packs, are rechargeable. These products allow you to renew their effectiveness by heating or drying them out, making them cost-effective over the long term. Rechargeable moisture absorbers are versatile and can be used in various storage unit sizes.

Climate-Controlled Storage Units: Many storage facilities offer climate-controlled units that allow you to regulate temperature and humidity levels. These units are equipped with heating, cooling, and dehumidification systems to maintain a stable environment. Climate-controlled storage is the best option for valuable or sensitive items, such as artwork, antiques, electronics, and furniture. It ensures a consistent and controlled climate year-round.

Ventilation and Air Circulation: Proper ventilation is essential for moisture control. Ensure that your storage unit has adequate airflow to prevent stagnant, humid air. Placing items slightly off the floor and not directly against the walls can also help air circulate better.

Storage Unit Sealants: Some storage unit providers offer sealants and moisture barriers for their units. These barriers help keep external moisture out and maintain a drier environment inside the unit. Check with your storage facility to see if such options are available.

Insulation: In cold climates, adding insulation to the storage unit can help reduce condensation and moisture buildup. Insulation prevents warm, moist air from coming into contact with cold surfaces, reducing the risk of condensation.

Regular Inspection and Maintenance: Regardless of the moisture control method you choose, regular inspections and maintenance are essential. Check your moisture control devices, replace or recharge them as needed, and inspect your stored items for signs of moisture damage.

Sealing Items in Plastic or Airtight Containers: For items that are particularly sensitive to moisture, consider sealing them in airtight plastic containers or vacuum-sealed bags. This provides an additional layer of protection against humidity.

The best moisture control method for your storage unit may involve a combination of these approaches. It's essential to consider the specific needs of your items, the climate in your storage location, and the size of your storage unit when determining the most effective approach to moisture control.

How to dispose of moisture absorber after using

After using the moisture absorber we need to dispose of it because it contains materials like silica gel or calcium chloride that absorb moisture from the air. Over time, these materials become saturated and lose their effectiveness. After completion of its limited lifespan, they won't be able to absorb more moisture. Consequently, we need to dispose of them to minimize their impact on the environment and keep our environment organized and tidy.

Moreover, in areas with high humidity, moisture absorbers are essential to prevent mold growth and keep this area hygienic. Without disposing of the saturated absorbers we cannot ensure a hygienic environment in that area. In addition to that, moisture absorbers contain some chemicals or substances that may be potentially harmful if they leak or spill. So, Proper disposal is necessary for ensuring safety.

Now, the question is how we can dispose of the saturated absorbers.

We may follow several steps to dispose of a moisture absorber properly:

Read the Label carefully: 

First of all different types of moisture absorber has different types of labeling based on its component. We need to check the label or packaging of the moisture absorber carefully to find out the specific disposal instructions.

Take the necessary safety precautions:

Before handling the absorber, we should wear safety gloves because some contents of the absorbers are potentially harmful.

Remove the chemical or Contents and Dispose: 

We should be careful to open the moisture absorber from a container. We have to ensure no spillage while opening the container. After that, you can dispose of them with your regular household waste. On the other hand, if the absorber is a disposable packet or bag, Place them in a sealed plastic bag or wrap them in newspaper to prevent any spillage. But before doing that you need to know if there are any local regulations regarding disposal.

Recycle and Waste Management in an Eco-Friendly Way:

If the moisture absorber container or packaging is recyclable, make sure to recycle it according to your local recycling guidelines. Some absorbers contain hazardous chemicals that require special disposal. In that case, we must contact the local hazardous waste disposal facility or waste management personnel.

Moisture absorber vs Dehumidifier: which one is best for storage unit

Moisture absorbers and dehumidifiers serve distinct purposes in managing indoor humidity levels, each with its own set of advantages and limitations. Moisture absorbers are passive solutions that utilize desiccant materials like calcium chloride or silica gel to absorb excess moisture from the air.

These devices are most suitable for smaller, enclosed spaces such as closets, cabinets, or storage containers, where they help prevent the development of mold, mildew, and unpleasant odors. They are budget-friendly and require minimal maintenance, primarily needing replacement or refilling once their desiccant material becomes saturated. However, their effectiveness is limited to smaller areas and mild humidity problems.

In contrast, dehumidifiers are active appliances designed to tackle more substantial humidity issues in larger spaces, including basements, bedrooms, living rooms, and entire homes. They employ a combination of fans and refrigeration or desiccant technology to actively remove moisture from the air. 

While dehumidifiers are more expensive to purchase upfront and consume electricity, they offer superior performance, effectively reducing and maintaining humidity levels at desired thresholds. Dehumidifiers require periodic maintenance, including emptying the water reservoir, cleaning filters, and occasional system checks, but they are well-suited for addressing more significant moisture challenges.

In summary, the choice between a moisture absorber and a dehumidifier largely depends on the scale of the humidity issue and the size of the space you need to address. Moisture absorbers are economical and suitable for smaller, confined areas like storage unit.  while dehumidifiers provide the robust and energy-efficient solution needed to control humidity in larger spaces or areas with more pronounced moisture concerns.


Many people leave the contents of their storage units at the mercy of mold, mildew, rust, and corrosion because they don’t realize the danger that moisture poses. They won't hesitate to invest in state-of-the-art humidifiers when they realize how easily dampness can destroy their assets.

They do not realize that desiccants can work just as effectively, yet they are cheaper. A lot of these products look like crystals. Once you sprinkle them in areas with high humidity, they will solidify and liquefy as they absorb moisture.

They come in small containers that keep the resulting liquid contained, preventing unnecessary leaks. The moisture absorbers above have been tried and tested. They will stand the test of time.

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