http://www.one.org/us/2015/10/15/4-ways-a-recycled-bar-of-soap-is-creating-change-in-uganda/#

Making landfills smaller, one bar at a time:
More than 2 million bars of partially used hotel soap are thrown away every day in the United States. The main culprit? The hotel industry! We’ve all been to a hotel room with bars of soap that are replaced daily. Did you ever stop to think where that old bar went? I hate to break it to you, but it probably ended up in the trash.

Yet what many don’t know is that soap is one of the easiest substances to recycle: It’s easier than paper, plastic, metal, and everything else we currently recycle now. If we can take our waste and turn it into treasure at a minimal cost, whilst simultaneously benefitting the environment, why wouldn’t we?