I am not a cat lover, each to their own, don't hate them either, but. If you where a dog owner, and allowed your dog to crap all over someone else's garden, you would have some recourse possibly in law, by dragging the dog owner through the courts. Let's face it, if a dog craps in your garden, the dog owner is usually in tow, usually because they have the dog on a lead, and therefore they are culpable. In the case of cats, they are semi feral, can jump walls, fences etc, and the owner doesn't "take them for a walk". Therefore in my book, keeping cats that **** all round the neighbourhood, but not in their own backyard, because they never do, is highly controversial. As they are not licensed, as opposed to dogs, I suppose you could shoot them if they are on your land.... Just saying.