How are people keeping cats out their garden?

I worked really hard to landscape my little new build garden only to find cats pooping in my border and pots and peeing all over my lawn and killing the grass.

I’ve been putting coffee grounds down which does stop them pooping but they’re still killing the grass. But I have to reapply the coffee every 1-2weeks so stuff like that is impractical.

I can’t have a motion sprinkler because we have to shut off the outside tap in the winter to prevent the pipe bursting.