Regulated cannabis is tested for things like mold and pesticides, so you know...

https://www.cool-bookmarks.win/regulated-cannabis-goes-through-testing-to-help-you-know-what-s-inside-like

Regulated cannabis is tested for things like mold and pesticides, so you know what you’re getting, which helps reduce risks. Unregulated products don’t have this oversight, meaning potency can vary a lot and contaminants might be present