That may put an end to your problem, but it's also the reason I have 25 cats on my farm.
We don't have 25 on this farm, but I'm really sure that's how the ones here (right now numbering 5) get here. The number comes and goes, probably due to the coyotes and big owl population.. The manx (yes, someone dumped one) we adopted. She is either spayed or sterile because she never showed up pregnant in the two years before she came in the house. She has now permanently claimed our couch as home..