You can bid for what has to be one of the most unusual Olympic souvenirs there's ever been - and help a very good cause at the same time.

What we're asking you to bid for is some horse manure - but not just any old horse manure.

This comes from Shear L'Eau, the horse on which Leslie Law won his Olympic Gold medal.

Leslie Law, Shear L'eau, Nathan Turvey and bucket of horse dung! Photo: Worcester Evening News

Think what that will do if you put it on your roses - they'll become championship blooms overnight (well, almost!)

And Leslie says that if you don't believe that it's really from Shear L'Eau, the successful bidder can go and muck out the stables themselves!

BBC Hereford and Worcester's presenter Nathan Turvey went to the stable to muck out.

Hear Leslie Law's personal invitation to help raise money for BBC Hereford and Worcester's Money Marathon charity.

To take part and bid for this once in a lifetime prize all you have to do is to go to this page on ebay and make your offer.