Desiccants and anti-corrosion capsules are a must for humid climates and damp storage conditions. While Pelican™ cases' watertight seals prevent unwanted water or moisture from getting inside, they can also trap naturally occuring condensation, especially when items are returned to the case while still wet. Desiccants and vapor capsules help counter the moisture-trap created inside a watertight Pelican™ case, dramatically reducing the chances of rust, corrosion or degradation of case contents. Dessicants can be recharged in a conventional oven. Zerust Capsules emit a Vapor Corrosion Inhibitor and have a life expectancy of one (1) year.