Diatomaceous Earth

The powdered silica of old sea basin critters contains their fossils which are pokie when viewed under a microscope.  When plants are lightly dusted or D.E. is applied with a wetting solution, the bodies of most insects are punctured.  Other than not breathing the dust, it is safe and effective for many insects.  Here on these Napa cabbages,(a little heavy on the dusting) I am dealing with earwigs.  On the strawberries, it was slugs.