Whether it’s a jacket, an expensive handbag, or a pair of shoes, leather is functional, stylish, premium material that makes a big statement. The only thing that may have a bigger impact than a well made leather item, is the presence of mold stains and mildew damage
The thing that I recommend for killing mold on leather is simply vinegar and sunlight. Mix a spray bottle with half vinegar (white vinegar is fine) and half water, then spray the infected piece with this solution and set out on a sunny day to dry. If your saddle is covered in mold it won’t hurt to spray the entire saddle down with this and set outside in the sun. You don’t have to soak the leather, a little will do. Once sprayed down, wipe the mold away with a cloth. The vinegar should kill the spores which can remain in the leather for years waiting for another chance to grow.
Mold assessment
Andersenenviro