Two UK outlets report public advice urging households to stop adding a particular “innocent” liquid to dishwashers. The articles say the liquid may seem harmless when rinsing kitchen items before washing, but experts warn that doing so can cause build-up and contribute to expensive plumbing problems. The guidance presented is that users should rinse items correctly and only use what the dishwasher is designed to handle, rather than adding extra liquid through pre-rinsing habits. Both sources frame the issue as a potential cost risk for consumers, highlighting that improper use can affect how the appliance drains and manages residue. While the reports focus on consumer behaviour and the cost of plumbing repairs, they do not provide detailed technical specifications in the excerpts. Overall, the advice centers on following manufacturer-appropriate use and rinsing procedures to avoid residue that could lead to blockages or related maintenance issues.