1) ASTM D6400 CERTIFIED ECO-FRIENDLY DOG POOP BAGS: Have the highest rating of eco-friendliness of any product we offer. Made from renewable resources such as corn, vegetable oils, and starches. Made in the USA. 2) USDA CERTIFIED BIOBASED DOG POOP BAGS: New in 2014, these bags are guaranteed to be made with USDA Certified Biobased materials. If you like the thickness, feel and reliability of The Original PoopBags, you are going to love these poop bags on a roll. 3) ECO-FRIENDLY DOG POOP BAGS: These bags are made with the same award winning technology as PoopBags ECO-ECO Rolls. Containing 30% post-consumer material, these dog poop bags are blended with a proprietary additive that allows them to disappear into the Earth naturally and earn three national certifications for biodegradability. Value pricing.