Originally Posted by wjcollier07
Be sure to clean them, its an important step.
This is VERY important. The cracks and crevices of leather will gather dirt. The combination of the dirt and moisture (even just high humidity) facilitates the growth of micro-organisms. These little unseen buggers get hungry and the leather is a perfect food. A few lunchtime'* and dinnertime'* later and your leather is now weakened and cracks and splits begin.
Like was stated before....cleaning is an important step.