City of Mansfield: Household Hazardous Waste Drop-Off - Mansfield
The Environmental Collection Center is the City's permanent drop off facility for unwanted household hazardous materials (anything with a warning label), electronics and recyclables. This facility is operated by the City's Environmental Services Department and is open the second Saturday of every month from 10 am - 3 pm, and the Thursday and Friday before the second Saturday from 3 p.m. to 7 p.m.
A full list of acceptable and unacceptable hazardous materials can be found here.