Eggs are laid on the outside of the food material, including whole grains such as corn, wheat, rice, or other grains, and the larvae bore through to feed within the grain. It is a pest primarily of grains and hard foods such as pet foods and pasta. The eggs are laid in small batches of 2 to 30 at a time, the larval development takes around 2 months under most conditions, and adults live only a few months. Both larvae and adults feed on the stored food materials, and their jaws are strong enough that they will bore into other materials such as wooden crates or shelving near the food product.
Prevention of the pest by good storage practices and proper stock rotation is important. Fumigation with methyl bromide or aluminum phosphide may be needed to kill existing larvae already within the grains, and disposal of infested material may be necessary.