Food grade diatomaceous earth (DE) is a versatile, natural substance valued by gardeners for its pest control and soil enhancement benefits. Composed of fossilized algae, food grade DE acts as a mechanical insecticide by causing dehydration in pests like aphids and slugs. Sprinkle a thin layer around plants or soil to deter these invaders. Food … Continue reading Food grade diatomaceous earth (DE) in the garden & barn