A few general notes about cartridge recycling:
Genuine Xerox Supplies
Xerox offers both single and multi-item return options through their Green World Alliance program.
For details, and to register as a user, please visit https://www.xerox.com/about-xerox/recycling/enus.html
HP, Canon, Lexmark, and Others
For other manufacturer’s products, many of our vendors include return labels in the product box. When these aren’t available we suggest using https://www.recycle4charity.com a free service providing pre-paid UPS labels for cartridge returns.