Diatomaceous earth is an all-natural substance that’s made up of silica from the shells of diatoms, or microscopic bits of fossilized algae. It is mined from sediment deposits found in bodies of water ...

To use diatomaceous earth outdoors, apply a fine layer to the perimeter of the patio or garden, paying special attention to any cracks and crevices in your walkways or patio. You can also apply it ...

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Jen Gushue Some people fear ...