Thermometers, old paint (before 1990), fluorescent light bulbs, pilot light sensors, barometers, some toys, clothes irons with automatic shut-off, blood pressure cuffs, antique mirrors, and grandfather clocks all contain mercury.  This is not an exhaustive list but includes many of the common household products mercury is found in. This must be disposed of at:

Hazardous Waste Facility
286 Knapp Rd., Binghamton, NY
Call 607.778.2250 or check for collection dates & times.
Cost: Broome County Households no charge on designated collection days; Non-collection days $5.00.
Tioga County Residents can utilize this facility April-November on collection days only.