Beasley Allen of Atlanta and Montgomery, Alabama, has filed a lawsuit against JUUL Labs of San Francisco on behalf of an Ohio mother who says her 14-year-old twin daughters became severely addicted to nicotine in middle school after using the company’s candy-flavored vaping products disguised to look like flash drives for computers.

The company denied the charges and said it’s only trying to offer a safer alternative for those already addicted to cigarettes—the real enemy.