How to Recycle Ink Cartridges - Castle Ink Sep 13, 2022 · Lauren Elward Updated: 9/13/2022 5 Easy Ways to Recycle Your Used Ink Cartridges Bring them to a local big box retailer like Best Buy, Costco, or Target. Drop them off locally at an office supply store like Staples. Check online for a recycling program that accepts them like Toner Buyer or e Cycle Group. Bring them t