These are great and good for the environment. They are dependable and sturdy as well. I like things a certain way, and Im never without these bags. As a new dog owner, I had to get used to cleaning up after my dog, but if he only eats his Synergy dog food then I know when and how much hes going to go, and I can clean it up quickly with these bags.
Long story short... after months of use, these bags don't readily compost, and a call to their customer service reps readily told me that these bags are 5% cornstarch, otherwise plastic, and it takes many months before they will even start to break apart "in optimal conditions." Even then, that means breaking into lots of little plastic pieces. That is not what I thought "biodegradable" meant. My bad? Kudos to the company for their customer service people being honest, but... if you're looking to buy "green"/compostable bags, not so much.
These bags are great! Very affordable compared to most others, and super affordable compared to other biodegradable bags, plus more sturdy and larger and easier to tie closed than any other similar eco-friendly bag I have seen available.