Mint Hill, Matthews, Charlotte Mecklenburg and Huntersville Police Departments, along with area non-profit organizations are sponsoring Operation Medicine Drop again this year. Residents are encouraged to bring their expired or unused prescription medications to drop off locations including Arboretum Shopping Center in front of Harris Teeter, 3333 Pineville Matthews Rd., Walgreens, 9202 Lawyers Rd., Mint Hill, Stumptown Park on April 21 from 10 am to 2 pm in Matthews.