From this list of humorous educational graphics on the right way to look after baby comes the following all-too-familiar image. It's easy to keep your infant from gnawing on a shoe, but once that baby is crawling about? And you maybe have a preschooler who is interested in monopolizing your attention? Well, some shoes are going to be chewed, is all I'm saying.
PS - a more lengthy/comprehensive post is TK. I know I owe you, people.