If you can get your self a little dog like a patterdale or maybe a cat, i recently moved into a house with a big garden and we were noticing noises and that like scratching and the neighbors said they have a rat problem, av got 2 lurchers and a patterdale, hunting dogs, and the neighbors were saying how the rats have gone, my dog was sniffing them out and we could put traps down, we built a better fence and tidyed the garden aswell, my patterdale caught one and weve never hurd anything since x