Does diatomaceous earth kill bed bugs?

I have been recommended diatomaceous earth for a bed bug infestation, but I have my doubts. Does DE really kill bed bugs?

Diatomaceous earth bed bug treatments can kill bed bugs, but there are important limitations. It can help reduce bed bug populations, especially in small or localized infestations, but it works slowly, requires repeated treatments, and is rarely effective as a standalone solution.

The powder works by damaging the protective outer layer of the bug, causing dehydration and eventual death. Because it requires direct contact, not all bed bugs in an infestation will be affected immediately. This is because bed bugs hide deep in cracks, seams, and furniture, making it difficult for DE to reach all of them. Factors like humidity and the thickness of the powder can influence results.

How long does it take diatomaceous earth to kill bed bugs?

It can be quite a slow process. You will typically have to wait several days before seeing noticeable results, and regularly reapply the diatomaceous earth during that time. What’s more, given bed bugs’ preference for hiding in inaccessible areas, it’s rare for diatomaceous earth to come into contact with every single bug.

While DE can help control bed bugs over time, relying on it alone usually won’t eliminate an entire infestation. For effective bed bug control, especially for larger or more persistent infestations, we recommend professional bed bug treatment.