When I’m lying in bed at night I can hear scratching sounds that sounds like it’s coming from the walls or ceiling? I’ve had pest control up in the loft today who have found no droppings at all and no evidence of anything being around. He said it could possibly be birds on the roof that’s causing the sound. Has anyone had this before and it’s turned out to just be birds? I’ve worked myself up that there is something in there so I’m jumpy as hell !