Anti-vandal paint to deter cats?

Nothing keeps the bloody things out. Been there and spent too much money being nice. Chuck the cat s*it back into your neighbours garden, make sure they see you doing it. They own the cats, they also own the s*it. A saucer containing antifreeze is supposed to work very well. I keep intending to get some.

Get a power water pistol gun thingy and blast them evertime you see them in the garden. It wont take long for them to decide its better to go else where. Oh and its good fun :-)

Another trick is connect your hose up pointing at a saucer of milk, then..........

Or a one-way trapdoor on a small box and keep them trapped for a day or so.

Think positive, be inventive and enjoy the fun!

Probably spraying the cat with something that is repulsive to them as they are quite clean, always grooming.

Borrow a dog for a couple of weeks and book a ringside seat :-)

In our little cul-de-sac a fair proportion of the houses have cats (generally the ones owned by "empty nesters", presumably trying to fill a void in their sad lonely lives).

However, I'm pleased to say that although we're surrounded by the furry rats, none of them get into our garden. No tricks, booby traps, deterents or chemicals. Just a 5 foot fence with NO GAPS of any size and a gate of the same height, that's kept closed. There is also nothing that overhangs (such as the shed you mention) that they could climb onto. In places where they have got in, in the past we have higher trelisses and branches arranged as a network to make it impossible for them to climb, even if they got onto the top of the fence. One thing that might work in our favour, is most of the local cats appear to be too fat to scramble up even the height of fencing we have. Maybe the neighbours are doing us a favour by over-feeding them as part of the emotional overcompensation for anything that feigns "love".

Now, if I could just stop the wretches leaving muddy prints all over the cars (and stop the cats doing that, too)

From the RSPB web site:

There is evidence that cats tend to take weak or sickly birds

It is likely that most of the birds killed by cats would have died anyway from other causes before the next breeding season

However, they also give a page of ways to deter cats that won't contravene the Animal Welfare Act 2006