Have you ever opened a tin container in summer and noticed your food feeling damp or slightly stale? This is a very common problem during hot and humid months. People store dry foods like spices, snacks, tea, seeds, or grains in tin containers for food packaging because they are strong and reusable. https://www.smart-article.com/what-are-simple-tips-to-prevent-moisture-inside-tin-containers-in-summer/