Posted: 26/06/2012 at 18:24
In my experience, nothing much works to deter cats. Can you hang your feeders up high where the cat is unlikely to be able to get the birds?
I have had some success by planting a couple of curry plants where a local cat liked to do its business and they certainly deterred him.
I have also found that spiky stuff you nail to the top of fences works as they definitely don't like to walk on it.