I apologize for the lengthy post. I have an established female spayed cat. Last week a very friendly and loving stray came into our yard and I have decided to keep him. I have him in a room in our lower level and the door is closed. I took him to the vet and he checked out okay but he needs to be neutered and I cannot get him in for that until 8/25. He is doing good in our lower level. He is not aggressive at all, he is not spraying and he is using the kitty litter and the scratching post. I work during the day so when I come home my husband is upstairs with our female cat and I sit downstairs with the new cat for a few hours. The vet suggested I wait another week before we do the visual part of the introductions. My question is should I wait until he is neutered before I even start that? If I do start the visualization then it would only happen for a few hours each night since I am gone during the day. I am debating when to start this process. Since he is not neutered yet maybe I should wait until he is before I do the visual introduction? On one had I thought 24 days of visual might be good before I put them in the same room but I don't want to stress them out and I don't want the male to start spraying. I feel bad because he is isolated from us which is why I sit downstairs with him every night but I don't want my female to get hurt. Any advice will be greatly appreciated.