I used to work for a firm that made that granular cat repellant. Atapulgite/cat litter, Isopropyl Alcohol, and ???? What was it??


No-one will ever stop cats going where they want to. Their territory goes to where some other cat attacks them, and it does not even recognise man-made boundaries. They will shit in anything that they can use to cover up the deposit (if Mummy taught them right) and that is useful as a boundary marker.

If you don't feed them and you have no loose cover, they will just pass through without bothering you.
It is dogs that really shit all over the place. Never in the same place twice, and much more of it than a cat.