The following cannot be shredded:
✖ Batteries
✖ Electrical items
✖ Large metal objects (staples, paperclips, butterfly clips okay)
✖ Sharp objects
✖ Ink cartridges and toners
✖ Glass
✖ Pressurized containers
✖ Medical waste (pills, syringes, etc.)
✖ X-rays
✖ Food waste
✖ Cardboard tubes
✖ Hard drives
✖ Product samples
✖ Most non-paper material
✖ Electronic media (USB sticks, backup magnetic tapes, computer backups, CD-ROMs/CD-Rs/DVDs, videotapes, cassette tapes etc.)