I buy mine from a dispensory and it's in an air tight container. Looks like a pill bottle (same shape, same color) but it's got a flip cap that isn't child proof. Ive been thru two 1/8 containers and one 1/4 container and there is nothing in the bottle when I'm done.

Why do I grind it? Because I smoke on the sneak, it's gotta be fast fast FAST. if it's already ground up, I just pack my one hitter and I'm done.