CLEVAST Moisture Absorber Boxes 6-Pack 10 oz Unscented Dehumidifier for Closets & Bathrooms — Fragrance-Free, Up to 60 Days

CLEVAST Moisture Absorber Boxes are unscented, single-use dehumidifier units that capture excess humidity with calcium chloride granules and collect the liquid in a built-in reservoir.

These six compact boxes deliver passive moisture control for enclosed spaces such as closets, bathrooms, cars, and RVs without electricity or fragrances. Each 10 oz unit uses spherical calcium chloride beads behind a one-way permeable paper to attract water vapor, lock it in, and funnel the resulting liquid into a transparent storage chamber so you can monitor progress. They’re simple to place, require no assembly, and can last up to about 60 days depending on conditions.

How do these boxes remove moisture from small spaces?

The CLEVAST units rely on hygroscopic calcium chloride granules that draw moisture from the air. As the granules absorb water they first clump, then dissolve into liquid that drains into the box’s reservoir for easy monitoring and disposal.

• Spherical calcium chloride beads attract water molecules rapidly.
• One-way moisture-permeable paper lets vapor in but locks liquid inside.
• Transparent bottom lets you see collected water and replace when full.
• Each box holds about 280 g of active material and lasts up to ~60 days.

Where should I place one to get the best results?

Position the absorber inside enclosed, low-airflow areas where humidity concentrates—closets, wardrobes, under-sink cabinets, bathrooms, gloveboxes, and small RV compartments. Avoid open rooms with strong air circulation for optimal performance.

• Place on a shelf or floor of a closet, away from direct sunlight.
• Set inside vehicles on a stable flat surface or in cup holders.
• Use multiple units for larger or very damp spaces like basements.
• Peel the outer white paper for stronger dehumidification when needed.

How long will one box last and how do I know when to replace it?

Runtime depends on ambient humidity and temperature; typical service life is up to 60 days in moderate conditions. You’ll know it’s spent when the granules have fully dissolved into liquid in the reservoir and the unit stops collecting more water.

• Initial clumping in 7–14 days is normal as absorption begins.
• Transparent collection area shows liquid level for easy checks.
• Replace when reservoir nears capacity or granules are fully dissolved.
• One box covers small enclosures—use several for larger rooms.

Is this product safe and easy to use around fabrics and stored items?

Yes. The boxes are fragrance-free and designed to contain the liquid securely so fabrics and stored items are protected from direct contact. The outer design keeps moisture inside, but you should place the box on a stable, water-safe surface in case of spillage while disposing.

• Fragrance-free and unscented for sensitive environments.
• One-way paper prevents leakage of liquid back onto items.
• Store each unit in its own box until ready to use for convenience.
• Keep out of reach of pets and children—calcium chloride is an irritant if handled.

Who this is for: CLEVAST Moisture Absorber Boxes are suited to anyone living or traveling in humid climates who needs simple, electricity-free humidity control—homeowners protecting closets and basements, renters preventing musty odors, RV and boat owners minimizing condensation, and car owners guarding interiors. They’re a practical, low-maintenance option for people who prefer unscented, disposable moisture solutions that are easy to place, monitor, and replace.