Moths and Beetles (stored product pests)
Stored product or pantry pests include several beetles, moths, and a mite that can infest whole grains or processed foods. Usually, the first sign of a problem is the appearance of small beetles crawling over counter tops, moths flying across rooms, or caterpillars crawling up walls or across ceilings. The solution requires finding and destroying all infested products in which these pests have developed, a general cleanup, and use of sealed storage containers to prevent recurring problems.
Some stored product pests feed inside whole kernels. These include the granary weevil, rice weevil, and the Angoumois grain moth.
A much larger number of insects feed on processed grains or broken kernels, or a variety of spices. Common pests include the red and confused flour beetles, sawtoothed grain beetles, drugstore beetle, cigarette beetle and Indian meal moth.
Flour beetles and the sawtoothed grain beetle cannot attack whole or undamaged grains but will feed on a wide variety of processed grains (flour, meal), as well as dried fruits, dry dog food, dried meats, candy bars, drugs, tobacco, and a variety of other products. The life cycle of the flour beetles takes about 7 weeks. Adult females can live for several months to more than a year. Confused flour beetles fly and are attracted to lights whereas red flour beetles crawl toward light but do not fly. Sawtoothed grain beetles neither fly nor are they attracted to light.
Drugstore beetles and cigarette beetles attack almost any household food and spice and leather articles. Cigarette beetles are most commonly found in dried dog food and paprika. Drugstore beetles are often in bread, flour, meal, breakfast foods, and spices like red pepper. Adults of both species can fly and are attracted to light.