I trap them and remove them before they destroy the ecosystem. In my area, feral cats have desimated the local bird population. No one feeds the birds any more because bird feeders become a killing ground for feral cats. Do you hate birds in the natural environment?
They destroy property and have torn screeens in my porch, crap on my lawn furniture, and are an absolute menace. They interbreed and become dangerous. They are definately an invasive species destroying the natural order. You might think you're doing the "right thing", but you are NOT.
