"Methamphetamine and heroin are the most common illicit drugs locally. They predominate in police evidence testing, drug court, drug treatment, calls to the Helpline and deaths. Thankfully, based on the 2017 syringe-exchange survey, we know that most methamphetamine and heroin (users) want to stop or reduce their use," Caleb Banta-Green, principal research scientist at the UW Alcohol and Drug Abuse Institute, said in a statement.