Colorado Issues Public Alert for 405 Stores After Craft Vapes Found Contaminated with Cancer-Linked Solvent

Key points

• StayCon voluntarily recalled 49 vape products, including brands Maui Wowie and Grape Gorilla, after a lab found methylene chloride in a flavoring compound.
• The Colorado Department of Revenue and Public Health and Environment issued a formal advisory on September 25, listing 405 affected stores across Denver, Pueblo, and Colorado Springs.
• The contamination was detected in August by Bona Fides Laboratory, but the state delayed expanded testing rules until late September, citing administrative delays.
• No adverse health events have been reported, but officials urge consumers to check batch numbers and destroy affected products immediately.

Background

This incident follows a series of ProPublica and Denver Gazette investigations in 2026 highlighting regulatory gaps in Colorado’s cannabis market. Earlier reports noted that manufacturers could choose their own testing labs and samples, allowing contaminated products to remain on shelves for months. The current recall underscores ongoing concerns about the state’s slow adoption of stricter solvent testing standards compared to other regulated markets.

How outlets are covering it

ProPublica and The Denver Gazette emphasized the regulatory delay, noting that the lab owner notified authorities six weeks before the recall and criticizing the state for failing to implement expanded testing by July. MJBizDaily highlighted the potential link to 'inversion,' where hemp is chemically converted to THC, citing industry suspicions about StayCon’s practices. KRDO and Medical Daily focused on the public health advisory, detailing the 405 affected stores and consumer guidance, while noting that no illnesses have been reported. The state’s Marijuana Enforcement Division declined to comment on the investigation, stating it does not discuss ongoing cases.

Why it matters

The recall exposes significant gaps in Colorado’s cannabis safety infrastructure, where delayed testing protocols allowed contaminated products to reach consumers for months. It highlights the risks of regulatory loopholes that permit manufacturers to control their own testing, potentially endangering public health. The incident also raises questions about the state’s ability to detect and prevent the use of hazardous solvents like methylene chloride in regulated products.

What to watch

Expanded testing for methylene chloride and 30 other solvents is set to begin at the end of September 2026. The Marijuana Enforcement Division may update the advisory if additional contaminated products are identified. Consumers are urged to check batch numbers on their vape products and report any adverse health effects through the state’s online reporting form.