Gardening: What organic compound should I use to kill garden pests? Hudson Designs on Apr 14, 2011 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.
Diatomaceous earth consists of fossilized remains of diatoms, a type of hard-shelled algae. It ...»