Illegal vapes, most widely used tobacco products among youth, sold in Hawaii : Kauai Now DEA: Illegal THC Vaping Cartridge Makers Targeting Youth With Extremely Potent Product CBS Minnesota Influx of illegal vapes getting into hands of teens in US Over 86% of e cigarettes on the U.S. market are illegal products from overseas, despite annual seizure of millions of illegal units by the FDA and U.S. Customs and Border Patrol