How about, "just say no"?
It seems corny but there isn't a lot of money in it if there is no demand except among that small portion of the population that has addictive personalities. The alternative is to legalize it, regulate it and tax it.
The alternative is probably the much better route. Funny how we lasted from 1789 to 1914 before we “had” to start outlawing the use of these “recreational” substances. To hear the drug warriors tell it, we shouldn’t have lasted six months, since many of the Founders cultivated cannabis and, presumably, smoked or otherwise ingested it for relaxation. Then, of course, there was morphine and its derivatives. But no, let’s keep on with a failed policy (which, depending on their goal, may NOT be failed... IF the goal is to trash the Constitution and Bill of Rights!) and keep headed in the same direction we’ve been going for the past number of decades, until the Constitution-as-toilet-paper is totally used up and gone for good.