At the end of the day, banning synthetic marijuana will fail unless you legalize consumption of real marijuana. Creative entrepreneurs will always provide the citizens’ desire, regardless of government approval.
Consumers have made marijuana a multibillion dollar enterprise. Legalize it and add a sales tax. Revenues will cover the costs of any abuse.
Citizens have more to fear from murder, arson, rape, muggings, robberies, auto and identity theft or home break-ins along with ever-increasing levels of confiscatory taxation and debt by government. Free law enforcement to pursue those who commit real crimes against citizens and property.
At 18, you are old enough to vote, be a parent, pay taxes, own a car, take out a bank loan, serve in the military and die for your country — but not being able to consume marijuana makes no sense.