Dozens of area businesses and police agencies are taking part in National Prescription Drug Take Back Day on Saturday — a twice-yearly initiative to have people throw out unused medications safely.Though police departments have permanent spots for safe, environmentally friendly drug disposal, the Take Back Day events are designed to raise awareness on the practice.For a list of participating locations, visit the Drug Enforcement Administration’s website at https://goo.gl/G8sxaA.Officials encourage safe drug disposal in an effort to keep prescription painkillers and other drugs of abuse out of the hands of addicts.