My mother owns a dressage saddle (pretty new, about 2.5 years old) that she uses weekly. It's made of smooth glossy finish leather (don't know the right term) pretty good quality, leather is pretty hard and thick.
She usually stores it in the common equipment room of the stables and in summer it gets a massive mold infestation. All hems, grooves, edges, the bottom part of the saddle sprout white fluffy mold as soon as summer sets in.
I suppose it has something to do with the fact that several dozens of saddles plus sweaty saddle pads and blankets get kept in the same small room with no ventilation, so humidity is extremely high and in summer, when it's hot as well, the mold just thrives.
In summer we usually try to get rid of that stuff in different ways. We usually wash it with damp cloth (we have tried clean water, soapy water, water with intimate wash lotion, yea, keep laughing, we hoped that if that stuff fights fungus down there it might do that on the saddle as well) sundry it as well as we can including sundrying upside down hoping that it will kill the mold. We tried oiling with ordinary saddle oil and also using leather furniture cleaner (but the cleaner just does not give tha suppleness that oil does)
Mold keeps coming back as soon as the saddle returns to the storage room.
I have a wild idea of mixing a little tea tree oil in saddle oil to kill the fungus. Would that work?
Or any other ideas?