Several UK outlets report that a coming period of very hot weather, with temperatures described as reaching around 40°C, is encouraging more people to spend time outdoors. In that context, both sources suggest practical household steps to reduce the presence of flies around homes and gardens. The guidance shared in the articles focuses on using “two common kitchen ingredients” as a simple deterrent method, though neither outlet provides detailed scientific evidence or extensive instructions in the provided text. The advice is framed as an easy, low-cost way to discourage flies when conditions are favorable for them, particularly during extreme heat. Both articles also connect the recommendation to the timing of the heatwave, implying that flies may be more noticeable during hot spells and that preventive measures are useful before outdoor dining and gatherings. Overall, the reports converge on the same general theme: during a major UK heat surge, people can try basic kitchen-based deterrents to help keep flies away from indoor and outdoor spaces.