Jo - I can only imagine the heartache that this is causing you.
I trust your judgement completely - you know your cats like noone else does.
You know what is right for them and for your home and family.
You might consider contacting the pet psychic that I used. Kimmy used her also.
Email me if you want her email address.
For the couch -
www.qvc.com V12344 or F155711
or

http://www.planeturinestore.com/dsp_...econdNav=prods

http://www.selmedica.com/odorsecret/...M6IUE8N9OJ1RJS


http://www.odorfix.com/faq.htm