Gary tackles two pressing home improvement questions. First, a listener shares a frustrating issue with a clogged sink, which led to unsightly stains on their Korean countertops. Gary offers practical advice on how to remove the stains, including using wet dry sandpaper and a polishing compound. Later, a caller asks about tankless water heaters, and Gary discusses the benefits and considerations of this type of system. He also shares tips on how to prevent carpenter bees from damaging homes.