I also have 4 totes wirh varying ages of superworms since they take so long to grow. They really congregate under the cardboard egg crates so I am going to replace them with a single piece of cardboard thats 1 to 1-1/2" from all edges so they can spread out more. They really want to be in the dark even more so than mealworms. 1,000 superworms go thru a large carrot every day.