Liz Truss has claimed that No10 was a “prison infested by fleas” and that some people blamed Boris Johnson’s dog Dilyn. In an extract of her new book, Ten Years to Save the West, serialised by the Daily Mail, the former Prime Minister said she spent her first weeks in the job “itching” because of a flea infestation. She wrote: “The place was infested with fleas. Some claimed that this was down to Boris and Carrie’s dog Dilyn, but there was no conclusive evidence. “In any case, the entire place had to be sprayed with flea killer. I spent several weeks itching.” She also compared her time residi…