If you chose an area without an alpha cat you may discover it is because the people there had a trap and kill program going on. (usually assisted by animal control who actually does the kill part) although I have a neighbor who drowns everything he gets in his trap.
Why do you think they INVENTED these programs to sterilize and return them? It wasn't out of any fuzzy-wuzzy feelings. Trap and kill does not work, unless done on a continuous expen$ive basis. Nature abhors a vacuum, and feral cats are fungible. They make new ones faster than you can kill the existing ones. You can only hope to control them within a general area- control meaning a non-spiking population- by retarding the birth rate by sterilizing the in-place population.
One of the most active players in this trap-neuter-return program is US Military, on their docks and warehouses. They are happy with the results.
I live in a place where we have plenty of natural predators, we don't need any exotics. I suppose TNR is a good idea in urban areas but feral cats decimate populations of native species where you do have a natural balance.
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