In a popular use of the term calorie, dietitians loosely use it to mean the kilocalorie, sometimes called the kilogram calorie, or large Calorie (equal to 1,000 calories), inmeasuring the calorific, heating, or metabolizing value of foods.
The best way to keep food safe and clean is when you bring them home wash them first and they place them in to the sanitized area you would like to keep them. the safe part is being clean and chewing well