BALTIMORE (AP) — Carryout food and drink containers made from plastic foam are no longer welcome in the city of Baltimore.

Mayor Catherine Pugh signed a bill Thursday giving businesses 18 months to stop using containers made from polystyrene foam. It also prohibits restaurants and other food vendors from using cups, plates, dishes, bowls and trays or any similar items made from this material. After that, businesses will face $1,000 fines for violations.

The City Council unanimously passed the bill last month after it was introduced by Councilman John Bullock. Versions that previously failed had offered businesses just three months to phase out the containers.