I had this happen a few batches ago. I spray everything down with star san before and after storage and the mold has not come back. I used industrial mold cleaner to rid the inital issue.
Definitely try the DampRid first. I had horrible mess of the furries after I let my chest freezer sit at 60 for a while. I use two of the DampRid containers in my 7cuft freezer, and I haven’t had a problem since.