Review on Arm & Hammer Fragrance Free Moisture Absorber & Odor Eliminator: 14 oz. Tub by David Royles

I needed a pair of these to soak up moisture in a car that had been sitting idle for almost a year and was also planning to use them around the house. I made sure to follow the instructions and removed the foil packaging from the top of the device. But after a few days, the bottom of the device ran out of liquid and the top was rock hard. So maybe some moisture was absorbed (I'm guessing that caused the top to harden?) but not enough to even drop a drop into the bottom reservoir. for a short time. It appears to be an identical product, the only difference being the shape of the container. So not sure why they are so useless while the other version of the hanging bag works fine.