Comment by Animats

Five ads and seven "subscribe" buttons, for one short article about silica gel.

Wikipedia has a better article.[1]

> You can just microwave them too, on low power... Oven drying has the advantage that you can set the temperature so there's no risk of overheating anything.

It's hard to hurt silica gel itself with kitchen level heat. Melting point 1200C. The packet it comes in is more of a risk. Although there are forms with other chemicals that change color when humid. Also, heating wet desiccant fast enough to produce steam might crack the material.

[1] https://en.wikipedia.org/wiki/Silica_gel