Wood Rooz worms are impregnated with edible waxes 2 days after finishing work, produced by the German manufacturer, confirming that they are environmentally friendly and harmless for the use of baby objects and food containers. Better to keep containers: Avoid washing with a dishwasher. It is best to clean it with a damp cloth after using the dishes. Occasionally, however, wax your skin to freshen and refresh dishes with a slice of olive oil.