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Superworms are large beetle larvae that can be used to feed reptiles. Unlike giant mealworms, which have been treated with growth hormones, superworms achieve their large size naturally. If you have reptiles as pets, you may be interested in housing your own superworms. You can buy superworms online or at a pet store. Superworms are fairly hands off. All you need to do is provide a habitat and food. If you want to breed your own superworms, which can save money long term, you can allow your superworms to turn into beetles by separating them in small containers. You can transfer beetles to a breeding container to produce more superworms.

Method 1
Method 1 of 3:

Providing a Habitat

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  1. A plastic container can work well for superworms. You can also pick up an aquarium at a local pet store. The container should be large enough that its top will be at least three inches away from the substrate.
    • You can easily use a plastic container you have lying around the house for superworms. For example, you can use a plastic tub used to store old clothing.
    • Make sure the container has smooth sides. This will prevent superworms from crawling out.
  2. Superworms need some ventilation to thrive. It's a good idea to go for a container with a mesh lid. If your container does not have a mesh lid, you can poke very small holes near the lid to allow ventilation.
    • Make sure the holes are small enough that superworms cannot crawl out.
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  3. Substrate refers to the material that lines the bottom of an aquarium or cage. It serves as both bedding and food for creatures like superworms. Bran, wheat bran, or uncooked oatmeal are all suitable substrate for superworms. They provide some moisture without harming the worms.
    • Substrate should be at least four inches thick so the worms have room to burrow.
    • Make sure any substrate you add is dry. Too much moisture can kill superworms.
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Method 2
Method 2 of 3:

Keeping the Superworms Healthy

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  1. Never refrigerate superworms as you would meal worms. This will kill them. The temperature should be roughly between 70° and 80° F (approximately 21°-27° C), which is generally within room temperature. It's usually safe to store superworms in an area of your home where the temperature is consistent.
    • Superworms can tolerate temperatures slightly higher or lower than room temperature on occasion. It may stunt their growth, however. If you have a room that is consistently a little hot or a little cold, do not keep superworms here.
  2. Superworms feed on fruits and vegetables. You can feed them leftover produce from your kitchen. As superworms should not be exposed to water, opt for produce that can provide moisture such as potatoes, apple slices, carrots, and fresh greens. These vegetables will help keep your superworms hydrated.
    • Always feed your superworms fresh, high-quality produce. Whatever you feed your superworm will ultimately go into your reptile, so offer healthy food!
  3. 3
    Feed your superworms at night. Superworms are nocturnal, so they do most of their eating at night. They are good eaters, and will go through food quickly if it is given at the right time.
  4. Unlike other insects, you should not mist a superworm container or place water in it. Superworms should never be exposed directly to water as this can cause health problems. Keep water out of a superworm's container as much as possible.
  5. 5
    Gutload your superworms before feeding them to reptiles. In order to provide proper nutrients for your reptiles, you will need to prep your superworms with an enhanced “gutload” diet. You can purchase specially formulated gutload diets at most pet supply stores. High-quality gutload foods are high in calcium and low in phosphorous. [1] Make sure your superworms have access to the gutload food for 24-48 hours before you feed them to your reptiles.
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Method 3
Method 3 of 3:

Breeding Superworms

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  1. You may want to allow some of your superworms to grow into beetles. The beetles can then breed, providing you with more superworms. If you have reptiles that feed on superworms, this can save you money. To start, separate larvae into chambers. [2]
    • Chambers should be tiny containers. Film canisters or vials work well.
    • Make sure to punch small holes in the lid of your containers for ventilation.
    • Use wheat bran or oatmeal as substrate. You should also add a small slice of carrot for moisture.
    • If you do not separate the superworm larvae from each other, they can live in the larval stage for six months to a year. They will only pupate when isolated.
  2. The second life stage for superworms is the pupal stage. It takes about 10 days in a chamber for a superworm to pupate. In the pupal stage, superworms will curl up into a round ball. Once they reach this stage, remove them from the chambers so that the larvae and adult beetles do not eat them. Put each pupa in an individual container, slightly larger than their original chambers, stocked with fruits, vegetables, and substrate.
  3. While you wait for the pupae to turn into beetles, make a breeder container. You will transfer beetles to this container so they can breed. [3]
    • Use any type of plastic container with smooth sides, such as a Rubbermaid container.
    • Add an inch of substrate such as wheat bran.
    • Place part of an egg crate in one corner. Beetles will gather here to breed.
    • Use a ventilated lid on the container.
  4. Check your pupae daily until you see beetles have emerged. Once your pupa has turned into a beetle, place it in the breeding chamber. Add each new beetle to the chamber. They will continue to breed until they die. You can remove superworms as you see them and feed them to your reptiles.
  5. 5
    Feed the beetles daily. Adult beetles should be fed fresh produce, just like superworm larvae. If the beetles don’t get enough to eat, they will eat their eggs.
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Expert Q&A

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  • Question
    Should beetles be kept separately from the superworms? Do superworms eat the eggs or baby superworms?
    Deanne Pawlisch, CVT, MA
    Certified Veterinary Technician
    Deanne Pawlisch is a Certified Veterinary Technician, who does corporate training for veterinary practices and has taught at the NAVTA-approved Veterinary Assistant Program at the Harper College in Illinois and in 2011 was elected to the board of the Veterinary Emergency and Critical Care Foundation. Deanne has been a Board Member of the Veterinary Emergency and Critical Care Foundation in San Antonio, Texas since 2011. She holds a BS in Anthropology from Loyola University and an MA in Anthropology from Northern Illinois University.
    Certified Veterinary Technician
    Expert Answer
    Beetles should be kept separately from the superworm. Superworms can become cannibalistic if they are housed in crowded containers.
  • Question
    How do I know my super worms are ready to pupate?
    Deanne Pawlisch, CVT, MA
    Certified Veterinary Technician
    Deanne Pawlisch is a Certified Veterinary Technician, who does corporate training for veterinary practices and has taught at the NAVTA-approved Veterinary Assistant Program at the Harper College in Illinois and in 2011 was elected to the board of the Veterinary Emergency and Critical Care Foundation. Deanne has been a Board Member of the Veterinary Emergency and Critical Care Foundation in San Antonio, Texas since 2011. She holds a BS in Anthropology from Loyola University and an MA in Anthropology from Northern Illinois University.
    Certified Veterinary Technician
    Expert Answer
    You will know that your superworms are ready to pupate when they curl up into a round ball, head to tail, and create cocoons from silk that will harden into a protective shell.
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      Article Summary X

      To care for superworms, keep them in a plastic container with a substrate of bran. Then, keep the container in a room with a temperature between 70 and 80 degrees F, which is the best temperature to encourage the superworms to grow. To feed your superworms, give them slices of fruit and vegetables, like apple and carrot. Don't worry about giving them water since they'll get it from their food, and extra water can cause health problems. Before you feed superworms to your pet, give the superworms a gutload food. For tips on when you should feed superworms and how to breed them, read on!

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        Jan 23, 2019

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