In a recent article, the author shares a cost-effective cleaning hack for maintaining a fresh-smelling and clean kitchen sink using a 70p washing-up liquid. The author, who does not own a dishwasher, emphasizes the importance of regularly cleaning the sink, which can be a persistent chore. Despite many available products, using a simple washing-up liquid from Sainsbury's has outperformed more expensive disinfectants in keeping the sink shiny and fresh.