dean wrote:
I tried Lowes and HD. Anyone know where to get burlap sand bags
(typical army size I guess)?

Don't use burlap. The mesh is to coarse and the sand will wash out.

Use canvas. Better is plastic. Plastic takes up much less storage space and
is reusable (canvas rots).

You can get all you want from the postal service (for free). Must turn
inside-out.