Nicole, I have seven Runner ducks that reside in my garden. However I do raise my veggies in raised beds that are bordered with used wine bottles so the ducks cannot get into them. They happily dine on any bugs/slugs/flying insects they can catch and choice greens within their reach. Two reasons for the raised beds, one being the concern regarding salmonella and the other being that they would clean the veggies out in no time! I do allow them to freely frolic in the beds that are finished producing for the year, so they fertilize a bit and enjoy an end of season treat at the same time.