Starbucks Is Recalling Millions of Straws

Starbucks is recalling about 2.5 million stainless straws after reports that they caused mouth lacerations to four young children.

The straws were sold in packs of three for $6 each in the U.S. and in Canada between June 2012 and June 2016. They were intended to be used with the company’s “Grande” and “Venti” sized stainless-steel cups.

Since the straws are rigid and pose a risk of injury, Starbucks has warned consumers to not let children use them, the company said in a statementTuesday. Three children in the U.S. and one in Canada were reportedly injured.

About 2.5 million packs were sold in the U.S., with an additional 301,000 sold in Canada.

In May, Starbucks recalled its breakfast sandwiches due to potential listeria. The issue was discovered during a routine testing that uncovered the presence of Listeria monocytogenes in the production facility, and the scare forced a Starbucks supplier to recall sausage, egg, and cheese breakfast sandwiches. Although no illnesses had been reported during the time of the initial recall.

For the stainless steel straw recall, the company is urging customers with questions to visit their local Starbucks or call 800-782-7282 from 3 a.m. to Midnight PT daily for more information. U.S. customers who need more details on the recall can visit the Consumer Product Safety Commission’s website. Canadian customers who need more details should visit Health Canada’s site.

This article originally appeared on Fortune.com