Interteck Packaging 2 Gram Silica Gel Rechargeable Tyvek Desiccant Packets and Dehumidifiers, Food and Pharmaceutical Grade 600 Pack Intertecks silica gel packets manufactured from Tyvek, a material far superior to paper, are certified safe for use around food and medicine by the US Food & Drug Administration (FDA). They meet the highest standards in the industry  guaranteed! Our Tyvek silica gel packets can be found protecting gun safes, ammo cans, camera gear, jewelry, clothing and more from the negative impacts of moisture: mold, mildew, corrosion. Protect what matters most to you with Interteck products! Arriving in our specially-manufactured moisture barrier pouch, your product is guaranteed to be ready for use. The re-sealable pouch is made from low moisture transmission film and will help extend the life of your unused product. All products come with Intertecks iron-clad satisfaction guarantee. No matter the issue, well make it right for our customers or their money back. Our operation, from manufacturing to fulfillment, is all right here in the US including support!