The theory is that when ferral animals (cats) create an annoyance they should be trapped and neutered and released back to their original habitat. The goal is for the animal to maintain the same dominance, to prevent reproducing members of the same species from invading the territory.
The dems have neutered themselves by becoming the party of opposition and obfuscation. They are a dying breed and kill little democrats before they are born. Now they are trying to import replacement democrats by encouraging illegal immigration. What a mess.
Great point it seems that the best way to keep from having an infestation is to build a secure fence so more don't get in and then let those that have been neutered die off.