On demand to the desiccant suppliers these packets can also be customized and packed in with combination of other desiccant as well. For example silica gel plus activated carbon can be used in combination to control odor as well as moisture problems. Apart from using them in packets, they are also used in canisters and breathers. These are huge machineries, which has the capacity to absorb huge quantity moisture in big containers.
It is used at places like factories near machineries. Sudden heating and cooling of machines create huge amount of moisture. Moisture is the biggest enemy to machines. If moisture in the atmosphere is above 40%, it is the most suitable situation where corrosion and rusting activities can take place. The best thing of using these desiccants is that once these desiccants indicate to be fully contaminated, it can be reused as well. These desiccants can be again brought back to their original form by heating them over certain temperature.