Urglers,

I hope to have got rid of my cat problem by installing a crowscarer which
sprays a couple or three cups of water when activated by infra red heat of a
moving body - it sprayed me twice when I forgot to turn off the water!

However, if you do not want to go to that expense to deter cats, how about
attracting them elsewhere? Catnip planted across the road might help to get
rid of the problem for you especially if the cats have to cross the road to
get at it.

Geoff