Mercury Tilt Switch – Old School Accelerometer

Rummaging through the ubiquitous box of random stuff, I pulled out a mercury tilt switch, which were / are used in vending machines, thermostats, and construction equipment to detect tilt. The liquid drop of mercury conducts current when it bridges two contacts at one end, and, according to wikipedia, can operate millions of cycles since there’s no wear. Anyone know the right way to dispose of these?