How should a technician dispose of an empty inkjet printer cartridge?

How should a technician dispose of an empty inkjet printer cartridge?

• Refill it.
• Throw it away.
• Follow local regulations for disposal.
• Give it back to the customer.
  

  Explanation: Refilling used inkjet cartridges is not recommended, as it may void the printer warranty and could leak ink, damaging the printer. Printer cartridges should be recycled, following the procedures established for recycling by the manufacturer. Because they are an environmental hazard, they should never be thrown away.