Ground flax seed and food grade DE (Diatomaceous Earth)

A friend is looking for both....anyone know where to find them?

I buy DE at the garden shop in Riberas. The owner won't say it is food grade but she consumes it, I consume it and my cats consume it. I think the health food store across from el Torito carries a food grade one. The product looks exactly the same, and is ten times pricier.
If you research it,food processors add it to a lot of grains for comsumption without verifying food grade. As long as it is not the stuff altered for swimming pools it should be OK.

Thanks Grizzy.

You can get the food grade DE in a shop in Joco which handles only DE not only the agricultural, but for the pets and human consumption. It is packaged as such. I would think it is has gone through a process which makes it fit for human consumption.