## Why the Method Doesn’t Work The main problem is uneven heating. Even at high temperatures, the microwave does not fully heat the sponge, so some bacteria survive. Moreover, the remaining microorganisms can continue to actively multiply, negating attempts at "sterilization." ## Health Risks Experts note that with regular use of the microwave for such purposes, bacteria can settle inside the appliance's chamber. Subsequently, they can contaminate food during reheating, increasing the risk of infection and potentially harming health. ## Danger to Equipment Another important point is safety. Wet sponges can overheat when heated, increasing the risk of damaging the device, causing short circuits, and even fires. The material of the sponges is not designed to withstand such loads. ## What to Do Instead The most reliable method is regular replacement of sponges. Specialists recommend changing them at least once a week, especially with active use. For those looking to reduce waste, it’s worth considering an alternative—reusable cloths made from natural materials. They can be safely washed and disinfected without risking damage to household appliances. The microwave is intended for cooking and reheating food, not for disinfecting kitchen utensils. Attempts to use it for unintended purposes can lead to the opposite effect—bacteria accumulation and appliance breakdown. Regular kitchen cleaning, timely sponge replacement, and adherence to basic hygiene rules remain the simplest and most effective ways to protect oneself and loved ones from harmful microorganisms.