Cats barf where and when they want to, they have no loyalty to certain areas.
And, all I have to offer about wonky cats is that it is Spring and I think they all know that. Mine are driving me bonkers as well, even giving them slightly opened windows and views to the bird feeders has not helped.
Verbal threats about being taken outside to the river do not work, DUH! We need cat ESP, so we could get into their little furry brains and tell them how good they have it as opposed to the alternatives, which they probably would say are better. They are cats, after all,