Green Pups by Bags on Board Dog Waste Bags Refill Pack (60 ct) are the next generation in dog poop bags. Made with breakthrough Xylomer Technology and natural Lignin (a natural byproduct of the paper-making process and a renewable resource) does not contain metal additives or require the water and energy needed to grow and harvest corn. Green Pups breaks down faster than regular plastic dog waste bags, are large waste bags that can handle any mess (8 in x 13.5 in), and the strong material is guaranteed to be leakproof. Breaks down faster than regular plastic dog waste bags Strong material is guaranteed to be leakproof Does not contain metal additives or require the water and energy needed to grow and harvest corn (compared to other leading brands) Includes built-in odor control and core-less pet waste bag roles further reduce plastic waste Material meets ASTM D6400 commercial compost standard