The silica gel is a moisture adsorbent, which is non-toxic, has no color and shape change even when been saturated, can be used for anything you want to keep moisture out of, including foods and medicines.Item: Desiccant PacketsMaterial: 100% Silica Gels ( transparent )Packing: 2 gram x 120 packsPacket Size: 1.75’’ x 1.18’’Moisture Absorption: Each 2 gram is able to absorb water up to 0.7 gram. Suggested Usage: Each 2 gram is able to protect container up to 1.2 liter/0.3 gallon. The desiccant packets can be found at every corner in your daily life:✓ To keep your medicines safe.✓ To get more life out of pet food.✓ To keep jewelry bright and shiny.✓ To keep homemade jerky fresh and dry.✓ To prevent damage to valuable documents.✓ To protect leather shoes, jerkins or jackets from getting moist.✓ To help grains and seeds stored in containers to be used through the year.✓ To drain the moisture out if the electronics (cell phone, pen drive, or camera) are accidentally exposed to water.✓ Etc...TIPS:1. The silica gel packets are not designed for open environments, for maximum effective, use them in sealed jars, bags, boxes and bottles,etc.2. Use larger amount than suggested if the water content of the storing goods is high.3. Discard the packets when they’re no longer working and replaced with new ones in time.4. Store the unused packets in sealed conditions after being opening up.