Y do u want to kill it? If it bothers u deliver it to a cat home; or catch it and move it miles from where u live. Cats can survive in the wild, if necessary.
If its your neighbours cat that bothers u, buy a cat scarer that emits a high pitch sound to ward off cats.
Give me the cat SpamBammer and u will have disposed of it
No doubt if you subject the cat to your boring rambling absolutely moron flipping adolescent questiions and flippant additude - then no doubt the cat will scarper; from boredom I would guess.
There you are - you have your answer. Now get lost!!