The U.S. Food and Drug Administration (FDA) directed that food companies stop the use of PFAS with chain lengths of eight or more carbons (a specific group of PFAS that includes PFOS and PFOA) for paper and paperboard food contact materials in 2010. This includes fast-food wrappers, to-go boxes, microwave popcorn bags, and pizza boxes. Some other PFAS chemicals are still allowed for these materials; however, FDA regulates and limits the amount manufacturers can use and for what specific purposes.