An unpleasant smelling dishwasher; transplanting a rose bush

Plumbing and heating expert Richard Trethewey helps a homeowner tackle the problem of an unpleasant smelling dishwasher. Richard is joined by host Kevin O'Connor, landscape contractor Roger Cook and general contractor Tom Silva to answer the question, "What is it?" Roger makes a HOUSE call to Iowa to help a homeowner transplant a rose bush. In the ASK THIS OLD HOUSE loft, Tom shows Kevin the proper and safe way to change a circular saw blade.