How does diatomaceous earth kill insects?

It is a mechanical insecticide. The powder absorbs the waxy coating on an insect's exoskeleton, so the insect loses moisture and dies. There is no chemical poison and no resistance builds up.

Is it safe around pets and children?

It is food-grade and OMRI-listed, so it is non-toxic if ingested in small amounts. The dust still irritates eyes and lungs, so apply it thinly and keep pets and children away until it settles.

Does it work after rain?

No. Moisture makes the powder clump and lose its ability to absorb the waxy layer. Reapply after rain or in damp spots, and use it dry.

Which insects does it control?

It targets crawling insects such as ants, fleas, bed bugs, cockroaches and earwigs. It does not control flying insects like mosquitoes or flies.

How should I apply it?

Dust a thin layer along baseboards, cracks, door thresholds and foundations, and work it into pet bedding and carpets. A light dusting works better than a thick pile, and a mask is advised.

Is it the same as pool-grade diatomaceous earth?

No. This is food-grade, which is filtered and safe around food, pets and gardens. Pool-grade DE is heat-treated and contains crystalline silica, which is not for household or garden use.