to want to kill the neighbour's cats

[dontsweatthelittlethings]

I often leave the back door open on a sunny day or when DD is asleep in her pram in the garden, but every time I do I discover one or both of the neighbours cats have come in and are loitering in the house.
I also find them in the garage when I leave the door open while the tumble dryer is on.
The neighbour's DC laughed when DS told her about them coming in and asked if they had peed anywhere yet! Apparently they do at home so it's only a matter of time.
Our own cat is scared of the other cats and rarely ventures outside so is not impressed by having them in the house! And the garage stinks of cat wee.
AIBU to want to string the little darlings up by their whiskers?
I would love to hear any suggestions on keeping these cats away.

[cordyblue]

My neighbour's cat keeps coming to my house and she weed all over the spare bed about an hour before guests were due to come the other day - the whole lot, inner duvet, pillow, covers, spread everything had to be bundled off to an outside laundry. Neighbour's cat also terrorises my cats. I'd happily have kicked the bloody thing out when I discovered the wee on the bed, I was SO cross. But really, no, I wouldn't hurt a cat!! I did try chasing it with water, but it ran away too quick. It doesn't come in when we are here, only when we're out and our cats are here.
I have ordered a catflap which works on the microchips. It has hopefully arrived today so I shall fit that asap.

[DillyDaydreaming]

YABVVVVVVVVVVetcU for wanting to kill them

But - a water pistol will do the trick - squirt said cats everytime you see them and they will eventually avoid you and the garage.