Glenda, where are you located? Danisco doesn't sell directly to the public.
I would not close the container completely but leave some opening for air to breathe and reduce humidity to 85%-90%. If your container is closed you may have too much humidity (95%-100%) which makes up all those crazy molds you are seeing.
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Also, please share the recipe, the type of milk (raw? Pasteurized? Homogenized? Whole milk? Skim milk? Added cream?) and tell us how you age it. Do you have a special fridge? Cave? Wine cooler?