The traps I was thinking of are the kind that are just a cage, that contains the animal. You put in a type of food they like and when they go inside, a door springs shut. It wouldn't hurt your cats, if you accidentally caught them. You could just open the door and let them back out.
I know nothing about ducks, but maybe you could get some tips, either here or in the Other Poultry section, on the best way to get them locked up at night. Do they go in better at night, after it becomes habit? Are there snack bribes you can use to lure them in?
I know nothing about ducks, but maybe you could get some tips, either here or in the Other Poultry section, on the best way to get them locked up at night. Do they go in better at night, after it becomes habit? Are there snack bribes you can use to lure them in?