Cities can also combat illegal dumping by offering disposal options for materials and substances banned from landfills, such as tires, toxic and hazardous waste, and medical waste. The Massachusetts Department of Environmental Protection recommends chipping or shredding tires so that they can be recycled in other uses such as highways, playgrounds, and running tracks. The United States Environmental Protection Agency recommends disposing of household hazardous and toxic waste in the nearest community drop off location. For example, Boston, Massachusetts holds drop off days four times per year. Similar rules apply to disposal of medical waste. In Boston, officials recommend storing syringes in Sharps Containers and disposing in a designated community site. The city also recommends utilizing mail back services to dispose of used syringes.