Silica Gel
This moisture absorber is made from sodium silicate. Its name may be misleading because this form of silica is actually solid. It is produced in a beaded or granular form. The silica gel has a very strong attractive effect on water molecules. The material is usually placed in a vapor-permeable plastic and placed inside airtight containers to prevent moisture from destroying the other contents of the containers. Silica gel should not be ingested, as it is a poisonous substance. To ensure that the product does not get eaten, manufacturers usually place a warning on the silica gel’s plastic container.