Ive personally snared rats in my old chicken shed,,,Didnt really intend to catch anything when I first set them and to my shock the next day had one,,caught 3 in total over 5/6days.You will probably have more luck using a Live catch trap or even better invite some terrier lads off this site up and have a couple of days at them,,,Im sure this will be the most effective method of getting rid :thumbs: