i would advise everyone to have one in their vehicle.very handy for before & after jobs like cleaning cladding/con roofs etc. recently had a new customer who refused to pay saying the con roof looked no different after we had cleaned it(obviously just trying it on as it was hanging)when i said if he refused to pay i would go through the small claims court, he said it would be my word against his ,until i showed him the pictures. needless to say he paid up