We have garden mice. I had a chat with them during which I told them very clearly that whilst they were garden mice I was quite happy to see them and they could help themselves to the bird food but if just one of them made any move towards the house they were all dead. Up to now they've stayed in the garden 
I wouldn't worry too much about the rat yet. It may just be a visitor. If you are concerned get a humane rat trap then release it miles away.
Things that (sometimes unreasonably) get on your nerves...hopefully lighthearted
Craig and Lindsay Foreman end their hunger strike in prison in Iran.


