Diatomaceous earth is one of the safest natural products in existence to control insects ...... it has worked against them for 100's of millions of years....it is so safe that there is even food grade diatomaceous earth....Having said that...it is unbelievably fine...and I wouldn't want to breathe in any dust like that........so if you use it....apply it in a slurry with water sprayed though any type of spray bottle. Once the water dries, the material will remain without creating dust.That diatomaceous earth sounds dangerous.
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