Bah, as for getting cats out of the garden.... my dad had a brilliant idea that he did with pigeons when he lived in the top floor of a flat.... A BB gun.... it just shocks them and they are fine after it, but they soon move away when you pick up the gun

Don't worry, he now only used water to get get cats out of his garden.... hes tried garlic pleats but the strange cats liked it....... He also has a few plants that they don't like but they only worked for a month or so and then their back.
In saying all of this, he liked cats..... he just don't like their business in his garden. About 6 years ago now, their was a baby cat in his area which he use to every day or 2 give it a small plate full of milk for it to drink, so hes not all bad....