Silica gel is a porous, granular form of silicon dioxide made synthetically from sodium silicate. It is a highly effective desiccant used to absorb moisture and keep environments dry. [1, 2, 3, 4, 5]
Primary Function
Absorbs moisture: It traps water vapor in its microscopic pores.
Prevents damage: It stops mold, mildew, rust, and spoilage.
Non-toxic: The gel itself is inert and harmless if swallowed.
Choking hazard: The packets carry warnings mainly because they are a choking risk for children and pets.
Cobalt chloride: Some color-changing indicator beads contain toxic moisture indicators (turning from blue to pink). [1, 2, 3, 4, 5]
Common Uses
Electronics: Keeps cameras, phones, and computers dry.
Leather goods: Prevents mold on shoes, jackets, and bags.