It’s hard not to chuckle at the foibles in Colorado.

Pesticides that are illegal to use on marijuana plants in Colorado are being found in some recreational and medical pot products being marketed and sold to the public — leading to product recalls, plant quarantines and even a class-action lawsuit involving people who say they would not have inhaled the product had they known illegal pesticides were used on them.

Pesticide testing is not mandatory for pot businesses in Colorado, nor are they subject to random pesticide testing, as are other crops, according to Mitch Yergert of the state’s agriculture department. Pot businesses generally are left to self-regulate pesticides use, though officials say they are working to come up with a plan for better oversight.