CLEVAST Moisture Absorber Boxes 6 Pack, 10 Oz Dehumidifier for Closet & Bathroom, Humidity Absorber for Wardrobe, Bedroom, RV & Car, Fragrance-Free Moisture Control, Unscented
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AI Verdict
This is a 6-pack of 10-ounce (280g) fragrance-free calcium chloride boxes designed for passive moisture absorption in small, enclosed spaces, featuring a 16.9 fl oz leakproof collection reservoir.
These CLEVAST moisture absorber boxes are a situational fit for targeted, passive humidity control in very specific, small, and enclosed spaces. Their 10-ounce calcium chloride capacity and 16.9 fl oz liquid collection are designed for localized dampness, not widespread issues.
If you need to dehumidify larger areas or require faster moisture removal, look for an electric dehumidifier with a higher pint capacity (e.g., 30-50 pint) and a built-in pump or continuous drain option.
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Pros
- Each box contains 280g of spherical calcium chloride particles, designed to attract and absorb excess moisture.
- The one-way moisture-permeable paper securely locks absorbed moisture inside, preventing leaks.
- The visible water level allows you to monitor the accumulated liquid and determine when replacement is needed.
- No assembly is required, and each unit is stored in a separate box for easy deployment and long-term storage.
- The fragrance-free formula means it won't interfere with personal belongings or cause allergic reactions.
- You can peel off the white permeable paper for a potentially more powerful dehumidification rate.
Cons
- The passive absorption process can be slow, especially in low humidity conditions where it might take 15-25 days for crystals to fully turn to liquid.
- These boxes are effective only in small to medium spaces; larger areas will likely require multiple units to maintain optimal humidity levels.
- The unscented nature means it won't add any fresh fragrance, which some users might prefer in a moisture absorber.
- Once the 16.9 fl oz liquid capacity is reached, the entire box needs to be disposed of, generating waste.
- The product's effectiveness and duration vary significantly based on environmental temperature and humidity levels.
Dimension Scores
The spherical calcium chloride particles effectively absorb moisture, but as a passive system, its speed and capacity are limited compared to electric dehumidifiers, especially in larger spaces or very low humidity.
No assembly is required; you simply place the compact boxes where needed, and the visible water level makes monitoring straightforward.
The boxes feature a 100% leakproof design and one-way permeable paper to securely contain the absorbed moisture, indicating a functional and secure construction for their intended purpose.
As a non-electric, passive moisture absorber, these boxes consume no electricity, making them inherently energy-efficient.
Best For
- Small, enclosed spaces like closets, wardrobes, and pantries where dampness is a localized issue.
- Vehicles such as RVs and cars that experience humidity buildup during storage or infrequent use.
- Bathrooms or laundry rooms where condensation and moisture can accumulate but without active ventilation.
- Storage areas like basements or garages with minor, contained humidity problems.
Not Recommended For
- Large open rooms or entire homes requiring significant and rapid dehumidification.
- Areas needing active air circulation or a specific scent profile for freshness.
- Situations where frequent disposal of liquid waste is inconvenient.
Watch Out For
- In low humidity environments, the calcium chloride may form transparent crystals and take 15-25 days to fully dissolve into liquid, making the process appear slow.
- Users might find that for spaces larger than a small closet, a single box is insufficient, necessitating the purchase and placement of multiple units.
- While advertised as 100% leakproof, improper handling or damage to the box could potentially lead to spills of the collected liquid, which is a saline solution.
- The product is a single-use item; once the calcium chloride is depleted and the reservoir is full, the entire box must be discarded, contributing to waste.
Full Specifications
| UPC | 850058838441 |
| ASIN | B0F8QDWRL4 |
| Brand | CLEVAST |
| Color | purple |
| Capacity | 16.9 Fluid Ounces |
| Material | Plastic |
| Floor Area | 0.13 Square Feet |
| Model Name | CL-MA01 |
| Item Weight | 4.93 pounds |
| Tank Volume | 500 Milliliters |
| Manufacturer | CLEVAST |
| Special Feature | 100% leakproof, Continuous Moisture Control, Effective Moisture Control, Visible Water Level, compact size |
| Item model number | CL-MA02 |
| Product Dimensions | 3.2"D x 5.9"W x 4"H |
| Included Components | 280g Moisture Absorbers, 6-Pack |
| Recommended Uses For Product | Residential |
What Buyers Say
The CLEVAST Moisture Absorber Boxes are generally well-received for their straightforward approach to tackling dampness in small areas, with users appreciating the visible indication of moisture collection. While the fragrance-free aspect is a plus for many, some wish for an added scent. The main limitation noted is their suitability for only small to medium spaces, meaning larger areas require multiple units to achieve noticeable humidity control. The product's effectiveness is tied directly to ambient humidity, with slower results in drier conditions.
“These things actually work! I put one in my damp closet and after a week, boom, water in the bottom. No more musty smell, finally! Just wish they lasted longer or I didn't have to toss the whole thing.”
Common Praise
- The visible water level makes it easy to see how much moisture has been collected.
- They are compact and fit easily into tight spaces like closets, drawers, and RVs.
- The fragrance-free formula is ideal for those sensitive to perfumes or who prefer no added scents.
- No assembly is needed; you just unbox and place them.
- The leakproof design provides peace of mind against spills.
Common Complaints
- The absorption process can be slow, especially in areas with lower humidity, taking weeks to see significant liquid accumulation.
- For anything beyond a small closet, multiple boxes are necessary, which can become costly and generate more waste.
- Some users miss the option of a scented product to also freshen the air.
- The single-use nature means frequent disposal of plastic boxes once full.
Ownership Tips
- The rate of water collection varies drastically; in a very humid bathroom, it might fill up in a week, but in a slightly damp closet, it could take a month or more.
- Even when the calcium chloride looks like it's solidified, it's still working; the liquid collection just takes time to start, especially in less humid conditions.
- Placing them in direct airflow or very high humidity areas seems to accelerate the absorption process.
- The 'peel off the paper' trick really does seem to speed things up if you need faster action, but I'd be careful about placement after that.
Frequently Asked Questions
How long does one box last?
The duration varies significantly based on the humidity and temperature of the environment. In high humidity, the calcium chloride can dissolve into liquid in about 3-7 days, while in low humidity, it might take 15-25 days.
Can I reuse the boxes or refill them?
No, these specific boxes are designed for single use. Once the calcium chloride is fully dissolved and the liquid reservoir is full, you dispose of the entire box. CLEVAST does offer refillable bucket options, but this 6-pack is not designed for refills.
Is it truly fragrance-free?
Yes, the product is explicitly designed to be fragrance-free and unscented, making it suitable for those sensitive to artificial scents or who prefer a neutral air environment.
What if I don't see water collecting right away?
Don't worry if you don't see water immediately. In low humidity, transparent crystals may form first, and it can take 15-25 days for the calcium chloride to fully turn into liquid. The process is slower in less humid conditions.
Can I use these in a large room?
These boxes are best suited for small to medium enclosed spaces like closets or RVs. For larger rooms, you would likely need multiple units, and an electric dehumidifier would be more effective and efficient.
Buying Guide
When you're looking at moisture absorbers like these, you need to understand they're not electric dehumidifiers. They work passively, meaning they don't plug in or have fans. They're best for small, contained areas where you have a specific damp spot, not for drying out an entire room. Think of them as a targeted solution for localized humidity issues.
Capacity (10 Oz / 280g calcium chloride)
This refers to the amount of moisture-absorbing material in each box. More calcium chloride means it can absorb more moisture before it's used up. For these boxes, 10 ounces (280g) is a standard size for small spaces, directly impacting how long it will last and how much water it can collect before needing replacement.
Liquid Absorption Capacity (16.9 Fluid Ounces)
This is how much liquid water the box's reservoir can hold. A larger liquid capacity means the box can collect more moisture over time before it becomes full and needs to be discarded. This directly affects how frequently you'll need to replace the unit.
Fragrance-Free
This means the product has no added scent. If you're sensitive to perfumes, have allergies, or just prefer a neutral environment, this is a must-have. If you want your space to smell like linen or lavender, you'll need to look for scented alternatives.
Alternatives
If these passive boxes aren't cutting it, consider an electric dehumidifier for larger spaces, looking for models with a specific pint capacity (e.g., 20-50 pints) and features like a humidistat for automatic control. For smaller, targeted areas where you want a scent, look for moisture absorbers with added fragrances.
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