Some simple rules that help me in caring and storing my Dutch ovens.
Never put away your Dutch oven dirty.
Never put away your Dutch oven wet.
Put a light coating of seasoning on your Dutch oven while it’s warm from cleaning.
Air circulation prevents a rancid Dutch oven. Store with the lid off or ajar.
Store your Dutch ovens in the house where the humidity is balanced.
Rotate your Dutch oven when selecting one for a meal. That one in the corner all dusting is going bad on you!