I've found that a spray of water from a water pistol tends to put them off
after a few times. You can get long range ones from toy shops.
Mel.

"Geoff" wrote in message
...
It's expensive, but have a look at www.scatmat.com . I bought a Scarecrow
to stop badgers, cats and herons and it certainly worked; the drawback is
that it gets me now and again when I forget to turn off the water!! I do
not use it all the time but at any sign of offenders returning I turn it
on and they soon learn to keep away.

G