My apparently potty trained DS (aged 3.7) has had a load of accidents in the past few days. (He's had some anxiety at nursery which we are dealing with - however this thread is about other practicalities). He only has some canvas shoes, wellies and leather shoes. All have been peed on - despite washing the canvas and the wellies are still a bit pongy, his "best" leather shoes smell like they belong to a tramp. Any ideas or recommendations on cleaning or other other shoes we'll be a bit stuck tomorrow if I can't figure something out.