If you have black mold stains in the cabin I would probably treat that first or it's likely to come back if you don't and the black mold is especially unhealthy for you so try something like this
https://www.grainger.com/product/CLR..._vc=IDPPLARECS
Once you do, this stuff works great for cleaning carpets and fabrics.
https://www.napaonline.com/en/p/NCB0...xoCmGMQAvD_BwE
You might also get a few of these to leave in the cabin to absorb moisture, especially over winter lay up when the cabin is closed. They help a lot.
https://www.tractorsupply.com/tsc/pr...BoCN1YQAvD_BwE
Good luck....
