I've got 2 rifles with wood stock (unsealed / oil finish)
They are infested with fury grey mold.
I've tried washing / drenching them with clove oil, and also quaternary ammonium aka Quatsan.
Tried sitting them out in strong sunlight.
Leave them for 2 weeks, and the mold comes back.
Does anyone have any suggestions to kill the mold, without damaging my nice timber stocks?


