ekemily wrote: How much should food grade DE cost? thanks
Our feed store carries 50lb. bags for $24.95 (get their supply from Canton Mills in MN). However, the same `food grade' Amorphous Diatomaceous Earth is also sold as a `pesticide', in 2lb. bags, by a different company, for $8.95. The only difference is in the required labeling and in how informed the customer is.
Both ADE and the clay (in the Red Lake formulation) are GRAS (Generally Regarded As Safe) by the FDA.