SO why is the shit on the street still heroin? Sure carfentinal is damn difficult to produce but some of these cartels essentially control countries (the FARC) and I am sure they could get the equitment to produce it. Smuggle small amount in sealed countainers into the US and then cut it 4000 times (of course you need to be carefull how well you mix). Easy to smuggle and CRAZY profit. Or something like etorphine if it lasts longer than car.
