Hi all, I was just given a box of leather holsters, gun belt, and speed loader pouchs that are 35 years old. They've sat in a milk crate in a basement for the last 15 years or so and have a white powdery residue covering them ( I'm guessing mold). I bought a bottle of liquid glycerin saddle soap and a soft nylon brush hoping to save these items and was looking for opinions on whether this is the best way to go about it. Thanks TJ