a very simple idea of putting a few kiddies windmill in the ground works. Something to do with the vibrations carried under the ground make it not very pleasant for the moles and the move off....(to a neighbours haha)
The Jeyes Fluid worked for my mum when she had moles in her garden. Not sure if it was the smell that got rid of them or the fact that she used so much she drowned them! But seriously, it does seem to work.
My father in law used to 'pat' all the molehills until they were sealed, except for one. That one had a length of hose put down it which was then connected to the car exhaust! Used to work for about 6 months...until other moles invaded!