I have got a couple of rat hole under my chicken shed, I do what I can to make sure there is no food about for them but I back onto fields and the sheds are dry and warm! Ideal for them to tunnel under.
I have put poison down, the stuff in 100g sachets I saw recommended on here, but they are not eating it. What is the best way to deal with the problem myself as I do not want to go to the expense of getting someone in and poison and traps dont seem to be working!
cheers