Mylar bags/oxygen absorbers/desiccants
I've been storing rice, oats, pasta, grains, flour etc. in Mylar bags with oxygen absorbers. We live in Houston(high humidity and temperatures). My question is, should I be using desiccants as well as 02 absorbers?
Also, some of the bags of the same product are tightening very well, while others are not. Do I need to re-package those that haven't for a longer shelf life?
Yes and yes.
You are at a definite disadvantage living in a humid area, so desiccants are a good idea for your storage.
Yes, you should reseal any Mylar bags that are not tightening. Did you use enough O2s? You can never use too many. Were the O2s definitely active (pink in color)? Did the bags seal completely? One of these happened.
So just to make sure to protect the shelf life of your food, throw in some new O2s, desiccants, and reseal the Mylar.
Good luck this time around.