What is silica gel and why do I find little packets of it in everything I buy?

Many of the things I buy contain little packets of crystals. Some of them actually say "Silica Gel" on them, but many are unlabeled or say something like, "Do not eat." I have found these packets in electronics, vitamins and even in some pepperoni I

Creative Ways to Reuse Silica Gel Sachets

Silica Gel Packets: Uses and Ideas to Recycle

Mini Packages of SIO2 Desiccant 1-10g Silica Gel in Packets

What is Silica Gel and Why Do I Find Little Packets of it in Everything I Buy?

6 Uses For Those Silica Gel Bags That Come With Everything You Buy

Why Didn't I Do This Earlier? Reusing Silica Gel Packets – A Pretty Happy Home

Shop online - desiccant sachets of 10 g of silica gel DISIDRY®

What is silica gel, and why do I find little packets? - Quora

4 surprising things you never knew you could do with silica gel packets

Small 1g White Silica Gel Desiccant Price Food Grade Silicone Packets for Pharmaceutical Use - China Silica Gel Packet, Desiccant Bag

11 Unexpected Uses for Silica Gel Packets « The Secret Yumiverse :: WonderHowTo

6 uses for silica gel packets around your home

Silica Gel Packets: 7 Surprising Uses of Silica Gel Packets, How to Use Silica Gel Packets

Moisture Absorbing Silica Gel for Safes

Silica Gel Uses: 20+ Clever Ideas Around the Home - DIY Candy