DE -does the grade matter?

[anyababette]

How important is it to have food grade Diatomaceous Earth in order to combat mites and dust the coop?
I am in NZ and cant find food grade anywhere!

 

[Camelot Farms]

VERY important.

Most of us have to order it online. I have a 50lb bag coming this morning. The shipping was almost as much as the DE but its worth it