Good Deed Gone Bad

I put our empty (or, almost empty) ink cartridges in a charity recycle bag. One of those that I picked up at Petsmart, that benefits some charity for animals. Anyway, I put the sealed bag into our mailbox, raised the flag, and went on with the rest of the day. A few hours later Ryan called me while Jacob and I were out swimming. He said that our postal carrier brought my package to the door and said that the ink leak out everywhere on her. Permanent printer ink, of course. She said that she didn't think it damaged any of the mail, just her clothing. Oops...