Education of the general public is never loud enough. Many cat owners and lovers feel that they will be taking their precious puss's freedom if they confine them to their home at night. This is simply cruel to our wildlife and overly indugent to the cat. From Blue Tongues to sugar-gliders. Keeping the cats in at night protects not only the wildlife of the area, but keeps the cat safe from fights with feral cats.
Cats are easily house trained with litter boxes.
The cat will use it. All Australians should be trying their best to rid their own area of the cat problem via education of their neighbour who owns a cat or trapping of the ferals that roam at night. If they won't do the education, then do it yourself. Policies to reduce logging and bell cats, neuter cats and keep cats indoors at night are helping reduce the damage done. The report of a panther in the Blue Mountains is a hoax.