Compléter Important Hygiene 2Version en ligne When do you know when it is no longer safe to use food or equipment for food preparation? This activity will help you improve your knowledge. par Chelsea Ralph 1 protect clean washed expiry vegetables buying refreeze chipped refrigerator often perishable use home glass Do not use crockery or ware . Wash dishcloths and tea - towels , so that only clean ones are in . Always food from dust and flies with a throw - over . Check the date on packages before . After shopping , place foods in the as soon as you arrive . Fruit and should always be before using . Never thawed food .