My garden produces a lot of herbs, like mint, sage, rosemary, lavender, etc. I use to wash them, after gathering, and dry them in the shadow to preserve (as much as possible) their scent, color and beneficial qualities.
Once dried, sometimes it happens that tiny spiders appear in my (sealed) jar. I suspect they were present among the dried leaves, maybe in form of eggs when I filled the jars. I don't want it to happen again, either with spiders, or insect, fungus, bacteria, etc.
So, is there a way to ensure that any kind of unwanted life is destroyed, before storing dried herbs? The only idea that came to my mind is to put dried herbs in the microwave oven for a while. Could it be a good idea?