Metro Detroiters can drop off unneeded and expired medications during the U.S. Drug Enforcement Agency’s (DEA) National Prescription Drug Take Back Day this weekend.

The DEA is warning parents about drugs like “Rainbow fentanyl,” which has been trending nationwide.

It’s the deadliest drug threat in America, and it only took days for rainbow fentanyl to appear in Michigan after the DEA warned it was coming.