Rodders asked to go in to the garden but he seemed to have been gone for ages so I went to the patio and called him. He came trotting out from behind the tree looking very pleased with himself. As he came in the door I spotted that he had something in his mouth. It was the plastic strapping from around the planks of wood up by the back fence.
I will need to check up there in daylight to see if he has done any damage.
I let him chew it for a short time but took it away as soon as he left it alone.