I have an "old" (20-40 years) shooting pouch that has been stored for many years. Probably in a box in the attic somewhere more humid than Idaho, but that's neither here nor there... it was dry in parts, somewhat hard, and inside there was the dreaded white mold. Because it is not a CW relic I tried giving it a good brushing in and out with Renaissance Wax. Some folks like it, some don't. My results on this pouch were pretty good. The leather is supple and usable again, so the pouch now has one of my flintlock doin's in it.
That said, I also have a CW cartridge box that is dry, etc... I'm hesitant to use this product on it though. Just not sure it is the right choice. I too am interested to hear other suggestions, or even kudos for Renaissance Wax.