Echoing the bait and trap if you can, best get the cat off your property sooner than later!
I used to do wildlife research and rehab work on islands (Kaua’i, New Zealand) and the damage that ferals wreak on island ecosystems in particular is devastating since many of these species are so endangered
on Kaua’i we would mount burrow cameras to monitor endangered shearwater nests and I cannot count the number of times I watched ferals rip apart a mom and her chicks on film. Unrelated also, but I wish people would leash their pets. We had an entire colony of 70+ shearwaters wiped out once from an unleashed dog, and are also periodically brought dozens of surviving chicks from feral attacks, to handfeed and release.
Hawaii also had so many that their feces got in the freshwater, and you can’t expose any cuts to freshwater because it’s so contaminated you could potentially die from infections if your cut is exposed. The fecal contamination is so bad it also kills many endangered marine mammals.
@Feather Unfortunately the feral cat issue gets really political so it’s so hard to treat them as invasives.. Neutering doesn’t really work since the cat continues to kill over a lifetime. Many of my biologist coworkers got death threats for being pro-trap and kill.
I’m always so upset when I see ferals, they kill 9 BILLION animals a year! But unfortunately I don’t think it’s something that can be be resolved