Orange essential oil is also not supposed to be liked by cats and may smell nicer to your noses than some of the bottles of stuff you can get from pet shops. (Though it would stain light things like carpet yellowy orange)

I dread what will happen when we get cats, our house stank of cats and dogs for ages after we moved in and while I think I've finally got rid of the smell, part of me worries that either I've just stopped noticing it or I've not removed it from a cat's point of view.