Are you one of those people who takes all the cute little toiletries the hotel offers you before you check out?
Well it's time to control your thriftiness - all for a good cause.
The organisation Clean the World is fighting hygiene-related illnesses by distributing more than 30 million recycled hotel soap bars to children and families in developing nations.
Clean the World works with more than 4,000 hotel partners in the USA and also in Asia.
The bars of soap make their ways to areas in need, particularly South East Asia and India.
The organisation also works in homeless shelters.
They accept donations of discarded shampoos, conditioners and lotions in order to put together hygiene kits to be sent to places dealing with natural disasters.
Small scale donations of soap aren't accepted, but just by leaving your soap at the hotel you'll be helping big time.