Both beetles and moths have a larval immature stage. The larvae, sometimes almost microscopic, feed throughout cereals and other grain products. Adult beetles feed in the same manner, but it is only the larvae of the moths that do damage, because the adults have mouthparts unsuited for feeding on grain. The moths often leave infested grain products to fly throughout buildings. Larvae of both beetles and moths are usually small, requiring magnification for identification.
Mites also infest grain products.
Common in pet foods. Control of pantry pests requires elimination of existing infestations and prevention of new outbreaks by good housekeeping, frequent inspections, and applications of pesticides. Shelves should be regularly and thoroughly cleaned to eliminate spilled food particles on exposed surfaces and from cracks and corners. Use of a vacuum cleaner with suitable accessories may be helpful. Small quantities of materials in open containers should be promptly used or destroyed, particularly if the house is to be unoccupied for extended periods.