A microbiologist has weighed in on how frequently people should replace kitchen sponges, a debate that has circulated online. Dr Primrose Freestone, an associate professor in clinical microbiology at the University of Leicester, addresses the question of sponge change intervals and what home users should consider to reduce microbial buildup. The reporting focuses on her guidance and the rationale behind it, aiming to give a practical benchmark for when sponges need replacing rather than simply relying on anecdotal rules. The articles present her view as the “settled” answer to the long-running discussion and encourage readers to check whether their current replacement habits are sufficient. Overall, the coverage centers on public health and everyday hygiene, linking sponge use to hygiene management in the kitchen and highlighting that sponges can become reservoirs for microbes if not replaced in time. The sources do not provide additional, specific comparative perspectives beyond her advice.