You didn't go to my job yesterday did you, sounds the same.I will never forget the day I needed to work in the loft in a LA bungalow. The house did'nt look too bad but when I lifted the loft hatch I was greeted with a strange smell. When I stuck my head up and shined a torch the whole loft area was literally carpeted in rat droppings, you could barely see any loft insulation ! It's rare for me to refuse to do a job but I refused this job on health and safety grounds, the tenant was furious but I felt my health was more important. I was never asked to go back but hopefully the pest controllers were sent in and the loft was cleaned out !.
The owner is away so we called them and they said get pest control in, guy turned up at 1pm looked into roof void and said wow insulation saturated in rat pi*s, he asked if we had cuts on our hands, to which I replied I have not been in there, by my mate had spent all morning in it. They both looked at his hands, looked ok, we were advised to abandon and come back, no problem we had finished changing 23 Halogens for LED.