I've had my 2 cats for about 18mths (they are nearly 2years) and have never had a problem with them straying. They have a cat flap and are allowed to come and go as they wish, they have also been neutered before I had them.
About 2mths ago, I noticed that one of them was spending a lot more time out of the house but the weather was getting nicer so didn't think anything of it. One day, a woman who lives across the road for me brought him back saying he had been eating the old whiskas that her cats hadn't eaten and she had thrown out in her garden for the birds. Call me stupid, but I didn't think whiskas was a birds food of choice!!
So now it all fell into place where he was going and why he was out a lot more. About a month ago, I went over to see her as the cat had been gone over 24hrs and he was in her garden. I asked her to shoo him away if he came in the garden as he would only stop going over there if she frightened him off. She said she was trying not too feed him but he was coming in the house using her cat flap and sleeping under her bed. Again, please call me stupid, but I have always been under the impression that cats will only go into a house if they are encouraged? of at least thats what I've always experienced.
10 days ago, she brought my cat back again, cradled in her arms like a baby and returned him. I said to her quite firmly to do something to drive him away. I've given her a spray bottle with water to use on him, it's what I use on him when he goes somewhere he shouldn't and all you have to do now is shake it at him and he stops. I also kept him in for a whole week to try and reestablish where his home is. He was let out last Saturday and went missing for Over 24hrs again, when I did find him, he was coming out of her cat flap with a mouthful of food. Every afternoon since, when I get home from work, I go over there and find him and his smell has changed so I know he has been in her house.
All this time, I've always gone out to look for him, if he doesn't come when called I know he is in her house. The food is also an issue, he has always had a sensitive stomach and since this has happened he has been vomiting more times then I've ever known. I'm really at the end of my tether with this. Her cat are not very territorial, she hasn't stopped feeding him, I've given her something to use on him to stop him coming in but she obviously hasn't of he wouldn't still be going over there.
Can anybody suggest something or I think he is going to take up permenant residence over there?