Fast-food wrappers and packaging that contain so-called forever chemicals are no longer being sold in the U.S., the Food and Drug Administration announced Wednesday.

It’s the result of a voluntary effort with U.S. food manufacturers to phase out food contact packaging made with PFAS, the acronym for perfluoroalkyl and polyfluoroalkyl substances, which do not degrade and can harm human health.

Starting in 2020, the FDA obtained commitments from U.S. food manufacturers to phase out PFAS in wrappers, boxes and bags with coating to prevent grease, water and other liquids from soaking through.