This is our 50Lb bulk size of 100% Food Grade Diatomaceous Earth!  Most noteworthy, It is in a vented paper bag and then wrapped in a BPA free plastic liner.  It contains (approximately) 4000 tablespoons with this size and is a great size for a big family, pets, and preppers.  Since Diatomaceous Earth has no specific shelf life, ordering in this quantity can offer you a greater savings.  Our next size down is the Food Grade Diatomaceous Earth 10lb Bag.