Sharps are accepted at the Marathon County Solid Waste Department. Put them in a commercial sharps disposal container on sale at most pharmacies or in a heavy plastic detergent or bleach bottle with a screw-on cap for sealing tightly. No milk jugs or other thin plastic. Do not separate the needle from the syringe. Label the container with “biohazard,” “infectious waste,” or “sharps."
Solid Waste Department location, hours, and contact information, http://www.marathoncountysolidwaste.org/contact/
The Marathon County Landfill also accepts them with the same container requirements. Call 715-446-3101 to make an appointment for drop off.