 Where I live, feral cats have the same rights as squirrels, which means you can do nothing about them. But if you do find a local cat rescue, they might be willing to come and help you take the cats, find them a place to be adopted by. And maybe if you find a place that you feel comfortable with, a donation might not hurt in helping them to get the cats off your property. So you never know. I might be able to make a call to your town or your village and see where that goes, too.