PoopBags USDA Certified Biobased Poop Bags Each refill pack of biobased poop bags contains 8 rolls of dog waste bags, with 15 bags per roll for a total of 120 poop bags per box. Each poop bag measures 9" wide by 13" long making them easy to tie, and use for large dogs. USDA Certified Biobased dog waste bags are made with a minimum of 38% biobased materials, which is great news for people who love their pets, and the planet. They're thick, puncture-resistant, and have a silky-smooth feel.