Hi Cate I have wooden flooring, and have plugged as many holes as I possibly could ;-( The neighbour downstairs is a tennant, but as the landlord has not enfored the no smoking rule, there is little I can do. The landlord does not seem to be be too conerned as he is still getting his rent. Hi Computedshortly We didn't end up doing renovations to the loft, bathroom or the chimney brest; but were lucky enough to catch all the mice ;-); but I will look into the expeller. I think, if I do move, i might have the same problem elsewhere so not sure how much of a good idea this is. But I will consider placingteh property on the market from Jan if the property prices ever go back up again ;-| I'll keep you all posted on progress, and thanks for all your advice