If your pet is favoring superworms over other bugs, try not offering any for a week or two. What are superworms? Superworms are the larval form of Zophobas morio, a type of darkling beetle. They're like mealworms, but bigger and fatter. This makes them good for use as occasional feeders or treats for reptiles, amphibians, and some arachnids.  We offer a pre-cupped option is great for hobbyists that want a convenient alternative to "boxed" or "bagged" feeders, and pet stores or resellers wanting a professional pre-packaged solution. How big is each superworm? Our medium superworms are approximately 1 1/2" long each. How often can superworms be offered? Superworms can be safely used as part of a rotation of feeder insects or as treats. Due to their higher fat content, avoid using superworms as a staple feeder. Nutrition Facts: Moisture — 57.9% Protein — 19.7% Fat — 17.7% Ash — 1.0% Fiber — 2.7% Superworms must be dusted with calcium supplement powder before offering. For details on superworm care, go here.