 Better to use a luffa, washcloth, or your hands to get clean. Sorry luffa lovers, but it's actually better to use your hands. Because luffas can harbor nasty bacteria, using your hands to get clean is the recommended method. It's also not advised to reuse a washcloth unless it's cleaned immediately after use and fully dried. If you simply can't cut ties with your luffa, make sure to sanitize it weekly either in a dishwasher or with a diluted bleach solution.