I re-homed a 6 year old cat.He was an outdoor cat,only coming inside for the occasional meal. He used to live just a few doors away and so it is important that I don't allow him out. He is desperate to go out, and sits sadly by the door,hoping someone will let him out. I just feel so guilty, but know that keeping him in is in his best interests. I have 2 Feliway plug-ins, in the hope that they will help him adjust to his new surroundings and allow my 2 original cats to get used to him being about. What are the chances of him and my other 2 cats settling down?