A reduced smell Mealworm storage container to keep your mealworms in a smell free environment. A Carbon Filter in the lid reduces unwanted odors so that the Mealworms can be kept in the house in a A smell free Mealworm storage container to keep your mealworms in a smell free environment. A Carbon Filter in the lid reduces unwanted odors so that the Mealworms can be kept in the house in a clean environment. Store Mealworms at around 65 degrees to slow pupation. Use a substrate (such as bran, oats or a mealworm food) and fruit or vegetable waste (for water) to feed your mealworms (not included). Can also be used to store other wriggling feeder insects.