This. Hot water is probably the most important antimicrobial agent of all. It works great when you do not have access to another sanitizer, and works better with a sanitizer such as bleach. This will increase dependence on chemical sanitizer which introduces additional health risk. Don't believe me? Run 140 deg water over a stinky sponge and rinse it out. It will be clean and free of whatever mold/yeast/microbe made it smell bad. Just hot water, nothing else.