To make sure your moisture barrier bags and desiccants have completed their job, add a humidity indicator card. Moisture sensitive spots on the cards act to various levels of humidity with a visible color change from blue to pink. Take a look at the card when you open the bag. The card will indicate the humidity level within your package.
To make sure your moisture barrier bags and desiccants have completed their job, add a humidity indicator card. Moisture sensitive spots on the cards act to various levels of humidity with a visible color change from blue to pink. Take a look at the card when you open the bag. The card will indicate the humidity level within your package. 
