ChratHB - The main ingredient in the moisture absorber is calcium chloride, which is a type of salt. It is a compound, and the formula does not change. It is available in a variety of scents and also in fragrance free options. The granules are influenced by variables in the area such as temperature, air flow, and overall humidity level, even within the same house. If the granules have formed a hard mass, they are still working to absorb moisture and should not be broken apart or thrown away. Give it some time, the mass will dissolve but may take several weeks. Please contact our helpline at 1-888-326-7743 if there is anything we can do to assist you.