DH and I trying to watch uni challenge and we hear a scratching sound above our heads. Went to check the hamster hadn't escaped again and he was all present and correct in his cage.
DH brings the floorboards up where we heard the noise and he can't find anything. I've phoned rentokil and they don't investigate noises...they only investigate droppings, sightings etc. But I know what I heard. 
Any advice? I'm terrified!