On Wednesday, the U.S. Food and Drug Administration (FDA) issued more than 1,000 warning letters to retailers and manufacturers of e-cigarettes. It is, according to an FDA press release, “the largest coordinated enforcement effort in the FDA’s history.” In the letters, the FDA gives manufacturers, including JUUL, just 60 days to demonstrate that they can keep the nicotine-infused products out of the hands of minors. If the companies don’t succeed, the administration could ban candy-like flavors like mango and crème brûlée, which the FDA sees as particularly appealing to teens. “JUUL Labs will work proactively with FDA in response to its request,” said a JUUL spokesperson. “We are committed to preventing underage use of our product, and we want to be part of the solution in keeping e-cigarettes out of the hands of young people.”