The plan is to phase them out by 2020.
Dunkin' Donuts to stop using foam cups by 2020
Dunkin' Donuts is still serving coffee in Styrofoam cups 6 years after saying it would stop
Dunkin' Donuts to eliminate foam cups by 2020
Dunkin' Donuts aims to ditch foam cups for paper by 2020
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Dunkin' Donuts to eliminate foam cups by 2020
April 26, 2020 by newstribune3 - Issuu
Dunkin' Donuts to ditch foam cups by 2020 – Queen City News
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