0 Eugene Orlando, FL on Apr 14, 2011 Like Clip What organic compound should I use to kill garden pests? 1 Comment Hudson Designs Loganville, GA Diatomaceous earth consists of fossilized remains of diatoms, a type of hard-shelled algae. It is used as a filtration aid, as a mild abrasive, as a mechanical insecticide. NOTE: You can drag and drop your photos to reorder them Required Comment Saving...