I've read in a few sections here,that people who live in areas that have high humidity,are having trouble keeping Sugars,flours and other long term food storage,fresh clump free.
These just might help remedy that problem.They when inserted into an opened package,the Oxygen Absorbers take out all the oxygen/moisture that's in the package.
It only takes 1 packet per bag. Then flavor seal the entire package.
It will work for any food item that's kept for long storage.
If you don't have a flavor sealer, canning jars will work just as well.Check the rims for cracks and chips before using the packets.
Hopes this helps.