Mildew & Fabric
Tho you''ve probably already found an answer, if not, try Lysol. The bottle of Lysol that you get in the laundry section of the supermarket. Works well on leather and vinyl and other fabrics, tho you want to ALWAYS test for color fastness.
Truth be told, I even had to soak a pair of Sperry''s in Lysol and water overnight. (In the aft cabin on a Beneteau 45f5, your head is not far above the cabin sole, and it was either the shoes or me. The shoes had been at sea for many months, as we had, but had not had the option of bathing.)
So, try Lysol. I know it sounds like an easy, old-fashioned solution, but it works in quite a few situations.