I am just concerned how many is too many before I might have house soiling issues. I am in a tizzy, as I don't want any sprayers. I have five resident cats, and then it would be two more if I keep them. So seven in total. Right now, they are kittens and my cats are fine. I am just wondering if anyone will start spraying when they are older. I know it is hard to tell. But someone told me anything over 5 you can have issues. Someone else said they had 8 and there were no problems. Anyone have multiple cats and have any problems?? I guess I am wondering what my chances are.
I participated in a seminar given by a vet who specialized in cat behavior. There is an answer to your question, but I forget the exact number! (since I don't have that many cats, lol)
Anyway, I think it was either 6 or 7. She said AFTER that, there tended to be litter pan issues. Of course, every case is different, so it's possible you might not have problems at all. Guess you have to decide for yourself it it's worth the risk.
I have 6 cats and they are in a cat-room with (4) litterboxes: 2 hooded/2 with an edger. I usually scoop them twice daily(sometimes 3x). There are 3 females/3 males-ages range from 5 yrs to 17yrs..(all spayed/neutered) They all share their space and use their litterboxes..Though, at times there are some "tiffs"--but that's to be expected with any family :)
Right now I have three. Henry is a sprayer and always have been so he is watched very carefully. I know his meow and he is outside asap as soon as he wants out. He has a nice bed in the spa room that is heated and A/C with a cat door. Never has he marked in there. So if I'm not home he is not in the house. At night he is in his bed.
I had a very old (14)Siamese cat and he never marked until I brought home two kittens. He was the only cat and really was upset about sharing. He was vet checked so he was just upset. This was a good 10 years ago.
I really think after having cats all these years, at least 12 altogether it is just the cat. Out of the 12 only two sprayed. ALL of mine have been spayed/neutered at a young age. I hope you have great luck.