Josh's Frogs Mealworm & Superworm Bedding (40 lbs) acts as both a substrate for your mealworms and superworms to live in and breed on, with the added benefit of providing a food source! Add 1-2 inches of Josh's Frogs Mealworm & Superworm Bedding and Food into your culturing container, then add a piece of egg crate and a moisture source (Josh's Frogs Insect Watering Gel, carrots, or potatoes work great!). Replace Josh's Frogs Mealworm & Superworm Bedding as it is broken down and becomes dusty.