-
Did the water pistol make any difference? We use water to defend our citadel when the big bully male cat stands guard outside our cat's (microchip) cat flap. He legs it each time and has definitely backed off over recent weeks. I haven't crossed paths with his owners yet but if I do I'll let them know I'm squirting water at their moggy just so they know it's friendly fire.
When our own cat was annoying a neighbour by sitting on her window sill during summer months I went round with a water squirter for them to use. Our mog definitely doesn't hang out there as much anymore.
I think you just have to be consistent so that the cat in question understands that that particular territory = a wet face.
Failing that... frozen sausages in a Nerf gun.
@lynx, @anthonyj, Might have to try the pee method...
I was in the garden this morning just checking for any cat shit, and black kitty's owners opened their door and we had a chat about cats and they asked me if their cat has been trying to get inside my flat to which I said yes, every single night and guess what? They found it very funny and didn't see cats fighting for tuff right outside my back door is an issue.
I might start shitting outside their back door see how they like it.