Smart Green clean compostable compost bin bags comes with 30 biodegradable and compostable bags. Forget about scrubbing your compost bin after it gets full; simply toss the whole bag into your compost pile, and reline with a fresh, new bag. Specifically designed for Natural Home kitchen compost bins. Smart compost bags are made with biofina compostable Resin and complies with ASTM D6400 standards, certified by BPI. Contrary to conventional plastics, bioplastics help the earth by offering a reduced carbon footprint and other positive environmental impacts. Always BPA & chemical free.