How do you properly dispose of expired or leftover medicine?

Despite some nationwide efforts to combat the opioid crisis, Americans are still hoarding and improperly disposing of their expired medications, suggests a new study. Commissioned by Covanta and conducted by OnePoll in advance of the next National Prescription Drug Take Back Day in April, the survey of 2,000 general population Americans found over half (53%) have no idea what to do with their old medications. On average, people have four leftover bottles of old medications and prescriptions in their medicine cabinets. Three out of those four are expired.