Other items that are related to the PC must be disposed of carefully. Most are common-sense items, but some are registered as hazardous PC waste. Laser-printer toner cartridges, refill kits and the used or empty containers of chemical solvents and cleaners can be among these items. Use the documentation that comes with a device to find out how the device should be disposed of. Refer to the material safety data sheets (MSDS) or Workplace Hazardous Materials Information System (WHMIS) for information on a particular chemical product. These documents should be available on your government's web site. Your government may have recycling arrangements.