More than two-and-a-half million units of arts and crafts tempera and finger paints are being recalled because they may contain harmful bacteria.

The recall involves 13 types of Sargent Art Tempera and Finger Paints in different colors and sizes.

Consumers should stop using the paints and contact Sargent Art for a full refund.

The paints were sold nationwide and in Canada at Hobby Lobby, Walmart and other stores, as well as, online at and shop from May 2015 through last June.

Consumers can contact Sargent Art at 800-827-8081 from 9 a.m. to 5 p.m. ET and Monday through Friday, or online at for more information.