Harford County is holding another Prescription Drug Take Back Day on Saturday, April 29 from 10 a.m. through 2:00 p.m. Safely dispose of your unused prescription drugs to keep them away from children and other unintended users, as well as doing your part to protect the environment. We make it easy for you by offering drop off locations at the Harford County Government Administration building: 220 S. Main Street, Bel Air, the Havre de Grace Police Station: 715 Pennington Avenue, Havre de Grace and Maryland State Police Barrack D: 1401 Belair Road, Bel Air. No questions asked!