Sometimes, people who sell medical marijuana cheat and put bad things in it, like chemicals or germs. This can make people who use it sick. In some places, like Colorado and Maine, they are trying to find these bad things and stop the people who do this. They want to make sure medical marijuana is safe for people to use. Read from source...

- The article starts with a false premise that legal cannabis is safer than street-sold marijuana. This is not necessarily true, as illegal vendors may have better quality control and avoid contaminated products that could harm their reputation or customer base.
- The article uses selective data to imply that Maine's medical cannabis market is worse than Colorado's recreational-use market. However, the two states have different regulations, testing standards, and product types, making direct comparisons difficult or meaningless.
- The article does not provide any evidence or sources for its claim that 50% of products in Maine's medical cannabis market are tainted with pesticides, mold, yeast, or harmful microbes. This is a serious allegation that requires verification and contextualization, especially given the conflicting results from different studies.
- The article does not explore the possible causes or solutions for the contamination problem, such as lack of proper cultivation practices, pest management, or quality assurance. Instead, it focuses on the negative consequences for consumers and the industry, without acknowledging the benefits or challenges of mandatory testing.