Recent data shows it's the fastest growing drug on the market, but teens may be getting it from medicine cabinets at home.
Police are hoping to put a stop to it through the 'National Medication Take-Back Initiative'.
The idea is to give the public an opportunity to turn in old, unwanted or unused medication.
Police say these drugs could be a supply for illegal use and this effort will hopefully help put a stop to it.
The 'Take-Back Initiative' will be held outside of the Kennewick and Walla Walla police stations.
You can drop off your old prescriptions at KPD between 11am and 3pm and in Walla Walla from 10am to 2pm.