U.S. health officials are cracking down on a brand of fruity disposable e-cigarettes that is popular with teenagers, saying the company never received permission to sell them in the U.S.

The Food and Drug Administration sent a letter Monday telling the company to remove Puff Bar e-cigarettes from the market within 15 business days, including flavors like mango, pink lemonade and strawberry. The agency sent warning letters to nine other companies either selling similarly unauthorized e-cigarettes or nicotine solutions that illegally appeal to children. Some of those mimic packaging of sweets and cereals like Twinkies and Cinnamon Toast Crunch.

The regulatory action comes months after anti-vaping advocates warned that disposable vapes like Puff Bar were a glaring loophole in the FDA’s ban on flavored e-cigarettes. That policy, which took effect in February, narrowly targeted reusable vaping devices like Juul, the blockbuster brand that helped trigger the teen vaping craze in the U.S. Under the policy, only menthol and tobacco flavors were allowed for those devices. But the flavor restrictions did not apply to disposable vaping products like Puff Bar.

The seller of Puff Bar, Cool Clouds Distribution of Glendale, California, did not immediately respond to emailed messages seeking comment Monday afternoon.

Anti-vaping groups had petitioned the company to remove all disposable vaping products from market, warning they have caught on with teenagers who previously used discontinued Juul flavors like mint and mango.

For months, the FDA has been consumed with the coronavirus outbreak, reviewing new tests and treatments. Earlier this year, the agency suspended in-person inspections at vape shops and convenience stores aimed at enforcing sales restrictions. Late last year, the U.S. raised the legal age to purchase e-cigarettes and all other tobacco and vaping products from 18 to 21.

(AP)