The U.S. Food and Drug Administration (FDA) and the Federal Trade Commission (FTC) have issued 13 warning letters to manufacturers, distributors and retailers for selling e-liquids for e-cigarette use in packaging that causes the products to resemble kid-friendly food products.

The packaging contains labeling and/or advertising that the agencies have deemed misleading, including similar imagery, cartoon-like images and packaging shapes and sizes that resemble products such as juice boxes. Several of the companies were also cited for illegally selling the products to minors.