I am working on cleaning up a flood car. The back seat has mildew in the leather only on one panel. I have tried Leatherique and leaving it in the sun for a day. I just cleaned it with the Pristine Clean this morning and most of the mildew is still in the leather. Would heating up the leather more and leaving the rejuvenator oil on there longer work better - or is there a product out there that I can get in the next couple of days that will get this out of the leather? I've tried searching, but all the mold threads are about cloth seats.