Ha! It seems I don't need a moth trap! My bathroom light seems to do the trick! We have a very small bathroom (6' x 6'6") the window of which looks out on to our rather leafy back garden. The light was accidentally left on last night and the window left wide open. I went to the loo at about 3am and the place was full of moths!
But where do they all go? This morning they'd all (bar one) disappeared???
D.