In the Pack and In the Container
Food spoils by moisture in two very different settings, and they need different desiccants. Inside the retail or bulk pack, the goal is to hold a low, stable humidity around a hygroscopic product, dried fruit, snacks, powders, nutraceuticals, pet food, seaweed, so it does not cake, stale, soften or grow mould. Small in-pack silica gel or clay sachets, sized to the pack headspace and the product's water activity, do this, and they must be food-contact-compliant and non-toxic because they share the package with food. Inside the shipping container, the goal is the opposite scale: removing litres of water from a 40ft container of coffee, cocoa, cashews, rice, grain or canned goods on a long humid voyage, where in-pack sachets are irrelevant and only high-capacity calcium chloride can stop container rain dripping onto the cargo.
BENZ manufactures both. The calcium chloride container range (BE DRY, BE DRY ULTRA) is compliant with EU food-contact regulation EC 1935/2004 for containers carrying food cargo and eliminates container rain on the long agri-export routes from origin to market; the in-pack silica gel and clay options are food-contact-safe, non-toxic and packaged in the formats food packers use. Both are documented for food-supply-chain procurement and customs, so the same supplier covers the pack and the container.