Hi I am new here I guess I will need a little time to sort thing out.
I read the article and wondered if you have heard of Feliway?
Feliway is a synthetic feline facial pheromone that I recommend, to help calm stressed cats and is used when there is an inappropriate elimination problem. If it's not a medical problem then this may be useful for them. It comes in spray form for smaller areas like where they have inappropriately eliminated, and can be sprayed in a carrier for transportation needs. It also comes in an electric diffuser for entire rooms that will help cats to adjust to new or changed environments, and for introducing new pets. It is always good to discuss these options with your veterinarian for use and availability if medical problems are ruled out. Feliway is available through your veterinarian, major pet supply stores, and also online
http://felineway.com