Colorado issues statewide alert after 405 stores sold vapes tainted with cancer-linked solvent

Key points

• The Colorado Department of Public Health and Environment (CDPHE) and Department of Revenue (DOR) issued a health and safety advisory on September 25, 2026, regarding contaminated 'Regulated Marijuana Vaporizer Delivery Devices.'
• The affected products were produced by StayCon LLC, doing business as Craft, and were sold at 405 stores across the state between March 27 and September 25, 2026.
• The contamination involved methylene chloride, a solvent used in paint stripping and chemical processing, which the EPA has linked to neurotoxicity, liver cancer, and lung cancer.
• StayCon voluntarily recalled 49 products, including brands like Maui Wowie and Grape Gorilla, after a third-party lab, Bona Fides Laboratory, detected the solvent in August 2026.
• Consumers are advised to check batch numbers on their products, dispose of contaminated items, and seek medical attention if they experience adverse effects.
• The recall occurred despite a planned July 2026 implementation of expanded testing protocols for methylene chloride and 30 other solvents, which was delayed by the state public health department.

Background

This incident follows a series of regulatory challenges in Colorado's cannabis market. In 2024, concerns were raised about 'inversion,' where hemp-derived cannabinoids are chemically converted to THC and falsely labeled as marijuana. Methylene chloride is a key solvent in this process. Colorado has struggled to implement testing standards that match those of 24 other states with regulated marijuana markets. Previous investigations by The Denver Gazette and ProPublica highlighted regulatory loopholes that allowed contaminated products to remain on shelves for extended periods.

How outlets are covering it

KOAA News 5 and KRDO focus on the official state response, emphasizing the 405-store reach and the health advisory issued by CDPHE and DOR. ProPublica and The Denver Gazette highlight the regulatory failures, noting that the lab detected the contaminant six weeks before the recall and that expanded testing rules were delayed. MJBizDaily adds context about potential 'inversion' practices, citing a 2024 complaint against StayCon that regulators dismissed. While all sources agree on the contamination, they differ in emphasis: state outlets focus on consumer safety actions, while investigative outlets focus on systemic regulatory delays and potential illegal manufacturing practices.

Why it matters

This recall underscores the risks of inadequate testing in the cannabis industry and the potential for hazardous chemicals to reach consumers. The delay in implementing stricter testing protocols raises questions about the effectiveness of state regulatory frameworks in protecting public health. It also highlights the ongoing debate over hemp-to-marijuana conversion practices and the need for more robust oversight in the cannabis market.

What to watch

The state public health department is expected to implement expanded testing protocols for methylene chloride and 30 other solvents at the end of September 2026. The Marijuana Enforcement Division may update the advisory if additional affected products are identified. Consumers are encouraged to check batch numbers and report any health issues. Regulators may also revisit plans to overhaul sampling rules to require independent lab personnel to collect samples, though this was previously delayed due to industry concerns about costs.