When your office runs out of toner, don’t throw away the cartridge! Toner brands will take back the empty cartridge for free and reuse/recycle these items.
Ricoh will have you weigh each cartridge, input it in their portal (https://row.ups.com/GuestAccess/Guest/Access), along with the EDP code (on the box!) After you input this information, you can print auto-generated shipping labels. Tape these labels to the boxes, then drop off at the UPS store. More information: https://www.ricoh-usa.com/en/about-us/corporate-responsibility-and-environmental-sustainability/product-stewardship-and-recycling
For HP, you can drop off items at Staples. If you opt to ship your items, HP needs a count of how many ink/toner cartridges you are sending, then they email you your free return shipping labels. Learn more here: https://www.hp.com/us-en/hp-information/recycling/ink-toner.html
With Brother brand toner, the site asks you to create a free account, give the model name and serial number, then will email you a shipping label. https://www.brother-usa.com/supplies/toner-ink-recycling
Sending toner cartridges back to the manufacturer helps keep trash out of the landfill, since these tubes cannot be used for anything besides refills. Recycling these cartridges also helps prevent waste of materials such as plastic, aluminum, steel, and rubber (staplesadvantage.com).
Read more about toner recycling options here: https://cash4toners.com/printer-cartridge-recycling/#ricoh-ink-and-toner-recycling