Many of us have switched from manual toothbrushes to electric ones when it comes to dental care. But when it's time to replace the toothbrush, how do you recycle it? The good news is that electric toothbrushes have an integrated rechargeable battery. And the nonprofit Call2Recycle has tens of thousands of free recycling boxes across the United States where you can drop off rechargeable batteries for recycling -- including electric toothbrushes. Just put the old toothbrush in the box, and the organization will handle the rest. Learn more at call2recycle.org.