Well that is what my roommate say’s, and she too has been breeding for 10 years. The basement is for her and the cats, males have one room for 3 males and females run the home, but also have one room for kittens. They don’t spray or fight with each other, they all cuddle together all the time. The only fights I ever see are females against males, because they have kittens. Which to me is another reason males and females should not be in the same house. The only smell I sent when I go down there is if the letterboxes are not changed or she has the old litter in a bag but hasn’t taken it out. So I always grab the bag and toss it out the door. I have never had problems or seen a problem with males and fighting and spraying. But I have heard about it lots, I guess it could be the type of cat or temperament of the cat. Maybe a stressed out cat or environment. Who knows but I have never experienced it.
If you have a whole house with only 3 males and if you have to separate the males from each other each getting their own room. Vs. Having a home with 3 males and 3 females, you can give them the attention they need so they can be happy. But attending to females with kittens, is full time work, and I can’t help but to think that the males would be forgotten in a room if they were never let out.
You say your cats are always separated from each other, and I believe that would be a good way of breeding, but most houses are only 3 bedrooms. And that doesn’t always happen, but I have never met you who knows you could be an exception.
