Roberta Bagshaw wrote:
In most enlightened communities it has become recognised that cat (and
dog) problems are a community concern.

With respect, Roberta, I think you are still missing an important point.
In the first instance, the responsibility must be the owners rather than
making it a community concern. Only because their are so many
irresponsible cat owners does is become necessary for others to try to
solve the (growing) problem. That really is not fair.

M