The Biodegradable Products Institute is the current standard in U.S. for composting. BPI and the US Composting Council use the American Society for Testing and Materials (ASTM) specifications to certify products as compostable. It was the Biodegradable Products Institute that created the compostable logo you see on our products. This logo is designed to reduce the confusion that surrounds plastic composting. The compostable logo can only be used on certified products. Because of that, it helps you know which products legitimately meet the ASTM D6400 and/or D6868 standards. It also helps your composter rest easy that the products you send them will biodegrade as expected.