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.
Mealworms are seldom a serious problem in homes. Control should begin with a search for spoiled and infested grain and grain products. Also, it is necessary to locate any accumulations of crumbs and other food material behind appliances and in upholstered furniture. Keep in mind that both mature larvae and adults wander and may be found a considerable distance from the source of the infestation. Integrated Mealworm Management Location of the infestation, followed by destruction of any mealworms found, will generally control an infestation.