Frequently Asked Questions

Moisture Absorber Products

What is the DampRid formula used in the moisture absorber products?
DampRid is a non-toxic inorganic mineral salt named Calcium Chloride. As with all other household chemicals, DampRid should be kept in areas out of reach. DampRid does not emit any type of fume, gas or vapor of any kind.

How does DampRid remove excess moisture from the air?
DampRid’s white calcium chloride crystals absorb excess moisture in the air, bringing humidity to an ideal and safe level of about 50% humidity. Once the optimal level is reached DampRid slows down, and will restart when necessary.  Without excess moisture, mould and mildew will not grow.

Why does my DampRid harden into a solid block?
DampRid is composed of calcium chloride, which is a type of salt product.  Because of its salt properties, as it begins to absorb moisture it begins to swell thus becoming a hard solid mass.  The salt is acting like a sponge pulling the water from the air and trapping it in the upper portion of the basket.  When the upper basket has completely solidified and has absorbed as much moisture as possible, it will begin releasing the water to the lower chamber of the product.

IT’S NOT WORKING! I have been using DampRid for years and this has never happened before.
The absorption of excess moisture and the solidification of the salt crystals depend on the amount of relative humidity that is present.  Mildew and mould require moisture to grow.  The optimal range for growth is 70-90% relative humidity.  When the relative humidity is below 62% mold does not grow.  This product is chemically designed not to dry the air to a level that damages plants, animals, or clothing.  Once the relative humidity drops below 60%, the calcium chloride becomes dormant, slows down and will restart again when necessary.  This is designed to be cost efficient for the consumer because the product works when it should and not when it does not have to.

Why is there no water in the bottom container; is something wrong?
If the DampRid is hard it will soon release the water to the bottom container.  Please be patient and water will start forming below.  Sometimes this will take up to a month, sometime longer, depending on how much moisture is in the air  If the DampRid is hard it is absorbing moisture in time it will release it to the bottom container.

Why is my DampRid “Mushy”?
The calcium chloride may at times feel “mushy” before it drains because the weight of the liquid at the point of dispersement could not immediately overcome the center crease (in the hanging bags) or just at the drain slits (in the refillable container).  (In the hanging bag) This is caused by the bag folding process during packaging.  When the bag absorbs more moisture, the weight of the liquid should be enough to open the drainage point on its own.  (In the refillable container), this may be caused by the hardened crystal formation that occurs occasionally due to humidity/temperature changes.  This may cause the drain slits to become temporarily blocked.  Allowing the product to continue absorbing without disturbance will allow the crystal formation to dissolve and allow proper drain flow.  Thus the calcium chloride will harden and dissolve as usual.

“Avoid metal and leather” appears on the container. What is the danger?
DampRid is a salt product.  If the absorbed moisture comes in contact with metal for a long period of time, the metal will corrode.  Similarly, the product can absorb the moisture in leather, leaving it hard and wrinkled.

Will the DampRid crystals and/or the liquid hurt my pipes?
No, the DampRid diluted liquid is safe for your pipes and is septic safe.  We recommend that you flush the liquid down the toilet.

What do I do if I accidentally spill some of the collected liquid?
Use a wet/dry vacuum or towel to absorb as much of the liquid as you can. Continue to pour regular tap water onto the spill to dilute the concentration of the liquid. If you don’t dilute or clean the spot, the spilled liquid will continue to absorb excess moisture and the spot may get larger.

The liquid is rusty colored, is there something wrong with the product?
No, there is nothing wrong with the DampRid or your home.  The rusty colored liquid comes from trace mineral deposits that are found in calcium chloride.  It may not turn rust colored in every batch but it is normal if it does happen.

Why are the white crystals discolored?
Discoloration may occur because of some impurities in the manufacturing process of the white crystals. Also, as they absorb excess moisture, the crystals also pull any dust particles in the excess moisture into the Refillable Moisture Absorber.

How do I dispose of the DampRid liquid in the Refillable container after the crystals are used up?
DampRid is water soluble. To dispose of the DampRid crystals or the fluid contained in the bottom chamber, simply flush down a toilet.

How many DampRid containers should I use?
This depends upon how much dampness is present and this can vary by location. Since the presence of musty odours indicates a mildew/dampness problem exists, we suggest you add a DampRid container to the problems area every few days until the musty odours disappears. You will have then found the correct number of DampRid containers to use.

Hanging Moisture Absorbers

Do I cut the bottom chamber to empty the collected liquid?
No. There is no need to cut the Hanging Moisture Absorber. When all of the white crystals are gone, discard the entire Moisture Absorber in the trash.

Do I break up the white crystals if they turn hard and form one solid mass?
No. This is a normal part of the process through which the white crystals absorb the excess moisture.

Do I break up the crystal mass in the lower chamber of the collected liquid?
No. This crystallization in the lower chamber of collected liquid occurs when there is a rapid temperature change. Do not squeeze or break up the crystal in the lower chamber. As the white crystals collect more moisture, the crystal mass will begin to dissolve.

What are the yellow or purple beads in the top of the Hanging Moisture Absorber?
The yellow and purple beads are fragrance beads that give the Moisture Absorber lavender and vanilla scent.
Disposable Moisture Absorbers

Do I cut the protective cover to empty the collected liquid?
No. There is no need to cut the protective cover. When all of the white crystals are gone, discard the entire Disposable Moisture Absorber in the garbage.

Is the Disposable Moisture Absorber spill-proof?
No, but the protective cover does help make the Disposable Moisture Absorber spill-resistant. If the Disposable Moisture Absorber is flipped over for an extended period of time the protective cover may become saturated and some of the collected liquid may seep out.

Refillable Moisture Absorber

Do I break-up or chip the white crystals after they become one solid mass?
No, this is a normal part of the process through which the white crystals absorb excess moisture.

There are salt crystals that resemble ice crystals in the lower chamber of the product. Why?
This can be caused by a sudden change in either temperature or humidity. To get rid of the crystals, run water over the ice crystals until the formation dissolves.

Do I need to empty the collected liquid before the white crystals have dissolved?
No. Instead of evaporating into the air, the collected liquid will continue to absorb a small amount of moisture from the air.

Should I add more DampRid white crystals to the top of the container before they are all dissolved?
No. Please allow all the white crystals to dissolve before you add more, or else you may alter the absorption process or damage the plastic container. 


Distributed by Kendler Corporation 1800 641 830