Once inside the home, the adult beetles will lay their eggs on a variety of foods including whole grains, processed grains and vegetative material. Food sources which can become infested include grains, flour, bread, rice, seeds, beans, pasta, cereals, bird seed, grass seed, potpourri, spices, teas, and tobacco. While they are highly adept at chewing out of cardboard, foil, and plastic film to escape the package in which they have undergone metamorphosis to adults, they are somewhat less likely to eat "into" a sealed, airtight foil or plastic bag. Ideally, all open packages should be discarded in an infested home; however, it is also effective to freeze items if the entire contents can be brought below −20 C (−4 F).