In this hour of At Home with Gary Sullivan, Gary tackles home improvement questions from listeners. Teresa calls in about a crumbling mortar issue with her fireplace, and Gary recommends using a product like Zip It Mortar to repair the damage. Mike discusses his deck's staining issues, and Gary advises on the best type of stain to use in a shaded area. Chris has a problem with a rotten egg smell in his sink, and Gary suggests using an enzyme drain cleaner to clear the blockage.