Economy Chips are wood chips that come from local tree service companies. We have no control over the consistency and quality of these chips. They are mostly a square chip, but mixed throughout you could (and probably will) find larger sticks, leaves, and maybe even the occasional Gatorade bottle, trash or log!? They work well for inexpensive ground cover, pathways, and weed control. Like the clean wood chips, they will last for many years. 300 – 400 lbs. per yard.