Difference between feed grade vs food grade diatomaceous earth??

[TropicalBreeze]

Our local country hardware store sells feed grade DE. The guy who works there doesn't know if it's food grade. Is there a difference between food and feed grade?

[Kelikea]

I don't think so. Just make sure it is pure DE, no additives and such.

[Friesian Rider]

I purchase feed grade to use around my farm to repel fleas.

I have been using food grade for a year now as a dietary supplement. I have had no change in my hair and it makes me a bit constipated :(, my doctor said it is no different than eating a bit of sand so I stopped using it. I have 10 lbs left just sitting on the shelf. It is very inexpensive I bought it through Amazon.com and received it within a couple days.

[rocket_surgeon]

Food-grade DE has to adhere to stricter heavy-metal content safety regulations than feed-grade does; food-grade DE must contain less than 10 mg/kg arsenic and less than 10 mg/kg lead. Feed grade isn't required to match that and is not recommended for human consumption.