Don't toss out your empty printer cartridge, there are many ways to recycle it. You can reuse it, just bring the printer cartridge to any Office Max or Staples store and have it refilled while you wait. In my experience, this will save you money since it is way cheaper than new ink cartridges but the quality is not as good.

www.eco-office.com - provides lists of companies that will purchase your used printer ink cartridges and even those cartridges used in laser printers.