A recent study published in the Journal of Cannabis Research has unveiled alarming evidence regarding the presence of pesticides in Canadian cannabis, drawing a stark contrast between the illegal and legal markets, or is there such a start contrast after all?  Legal cannabis has much thinner margins due to the heavy burden of regulation and taxation, so using chemicals to enhance yield and create more profit is always a temptation.  If you can get around lab results and testing, the temptation may be just too great not to do it.