This.Put the lid on it.
In my environment? Lid on and in the storage cupboard in the garage. Humidity is not an issue and I have a conditioned garage. Stays between 40-70deg. I've had no problems.When you open a new 8-lb jug, unless you use all 8 pounds, how do you store the now open jug ?
Dangle in the top a little desiccant pack on a string ?
Pour the whole jug into several smaller containers ?