Food Grade Diatomaceous Earth

[Paphluvr]

I've only heard of diatomaceous earth being used for slugs in the garden, never for insects. And why does it need to be food grade? It can be found in any good garden center. It is also used in aquarium filters to filter out diseases.

[orchidsarefun]

Originally Posted by Paphluvr

I've only heard of diatomaceous earth being used for slugs in the garden, never for insects. And why does it need to be food grade? It can be found in any good garden center. It is also used in aquarium filters to filter out diseases.

Must be food grade because that's not harmful to people/pets. Non food grade apparently has a higher concentrate of silica and is dangerous in dust form. It's not that expensive online so food grade is "better safe than sorry" in my opinion. You can research the differences and come to your own conclusions