Sent by Gail
Editor: Well, according to the EPA, hydrogen peroxide "breaks down rapidly in the environment to oxygen and water."
So... you could leave the caps off for awhile and safely dump them. But since that feels pretty wasteful to us, try using it for a myriad of other things, as greenlivingtips.com suggests, such as sterilizing your toothbrush or killing mold in your bathroom.
Image: timsamoff; sxc.hu