You must be nice to the cats....In Austin they catch the feral cats, spay them, and then release them right back where they were....
Oh! I just thought of this...I can send you a coyote to keep the feral cats in check. We have cats in our neighborhood, but they're kept indoors by their responsible owners. The ones who are let out to roam...don't come home. Coyotes love 'em....