Most KM supplies are recycled by KM. They have a link on their website that allows end users to set up a date and time for KM to visit user sites and create a drop for spent toner cartridges. When this drop is full, users notify KM and they retrieve drop free of charge. (Visit www.myctlportal.com/konica-minolta) You may also submit a request at [email protected] to have spent or new supplies picked up from your location.