You want your cats to get along and this should be done gradually. Whilst the new cat is restricted to one room in the home, you can swap scents between the cats so they get used to each other before meeting for the first time.
Scent swapping can be done either using the bedding or by you stroking one after the other or by rubbing material on their cheek and place with the other cat.
This will allow them time to get used to each other's scents before meeting for the first time.
The above video advice from our veterinary advisor on how to introduce cats.
First impressions matter
You need to supervise the first meeting of cats.
Each cat should be able to have an escape route.
Using FELIWAY during this first introduction is advised to help the cats feel safe and secure, this helps reduce the chance that they will view one or other as a potential threat.
Again using a FELIWAY Diffuser for at least one month will help both the new and resident cat(s) but sometimes resident cats may need longer to adjust, in which case you can use FELIWAY Refills as long as needed.
Plug-in FELIWAY Diffuser in the room your cats spend most of their time. If cats are separated or do not share the same living areas, this may require one FELIWAY Diffuser in each area. Additionally, each cat should have access to their own resources (food and water bowl, litter box, resting area). We recommend you see and use our advice on how to make your home cat-friendly, to help stop potential conflict issues. See also our advice on multi-cat households and cat conflict.
Hopefully, you will get to see the cats face rubbing or sleep close to each other.
after just a few days of using Felaway, he was like a compleatly new cat, his coat was silkier,...