Bins and recycling centres
Used printer cartridges can be put in your purple (nonrecyclables) bin or the nonrecyclables (general) waste skip in Arbroath, Forfar, or Montrose recycling centres.
Alternatively, some charities accept used printer cartridges: search online.
Shops and manufacturers
You can also post printer cartridges to the manufacturer (check online for information) and they can usually be returned to the shop where you bought them.