I have 7 cats. Two of my neutered males (one is 17 yrs old and the other is not quite 2) both were neutered prior to turning nine months old. The older one has always sprayed some, but it has increased since my mother's two cats moved in. The other is spraying constantly. Do you have any suggestions as to how it may be controlled.
You can try Feliway. Check it out on our site. vetcare