ok this might sound kind of strange but I work with chemicals at work everyday and we have this environmentally friendly animal and human safe chemical called micro ban it prevents mold from forming in water damaged basements and other situations like that I was thinking about making a diluted mixture and misting the foliage if I start to notice any mold forming. Other than that i use a small bottle of axe spray and spray a circle about a foot away from my plants stems and so far no animals have even touched my plants and there are deer and rabbits and all kinds of small animals all around the fields so maybe that might work for you