Rinse it out with clean water and scrub out any visible moldy bits and then scrub it well with a vinegar soaked rag. Repeat as needed. Rinse with clean water and let air dry, preferably turned inside out and in the sun. That has worked for me.Afternoon all. I recently discovered that a bladder of mine was leaking and I now have 2 upland bird vest packs with mold. Any tips on how to get rid of the mold and save the packs?