The eggs hatch in about two weeks. Mature larvae are active and wander in search of pupation sites. Due to this habit they may be found in any area of the home. The complete life cycle, therefore, requires 6 months to 2 years for completion. One generation per year is normal.
Mealworms are scavengers and are most commonly found in damp, spoiled grain and grain products.
Adults and larvae hide in refuse, sacks, bins, grain and similar undisturbed situations. Adults and larvae are also found in cereal products, macaroni, meal, bran, meat scraps, feathers and dead insects. Mealworms are popular as fish bait and as food for many types of small pets. They are easy to raise and there is information available on this subject. Mealworms also show great potential as a source of protein for human nutrition.