Used for storing drawn frames. Stack your empty supers on top of each other tightly and put 6 Tablespoons on top of newspaper or in an envelope on the top super. Cover the stack with a telescoping cover and make it as airtight as possible. It will produce a gas that is heavier than air and it will escape if not tightly sealed. Check every 3 weeks or so and reapply if needed. Only stack about 8-10 supers per stack. Stored combs must be aired out before returning to the bees. Cannot be used on the hive with bees in an effort to control wax moths. And cannot be used on supers that have honey in them. For empty storage only.