This 2.5lb jug is our starter size of Diatomaceous Earth.  It contains (approximately) 200 tablespoons, and is a great size for a big family and pets.  Since Diatomaceous Earth has no specific shelf life, ordering the Food Grade Diatomaceous Earth 4-2.5lb jugs is offered at an even better price!  if this 2.5lb Jug size might be a little large to start with, we also offer the Food Grade Diatomaceous Earth 1lb Jar.  Please call 1-800-228-5836 for more information on special pricing and free shipping for bulk orders.